Home / 261,881.72-392,994.84-143,636

Finding the Fourth Proportional to 261,881.72, 392,994.84 and 143,636

Calculator

Solution

The fourth proportional to 261,881.72, 392,994.84 and 143,636 is: 215,548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,881.72 : 392,994.84 = 143,636 : x
  2. Step 2: Convert to fraction form
    261,881.72/392,994.84 = 143,636/x
  3. Step 3: Cross multiply
    261,881.72x = 392,994.84 × 143,636
  4. Step 4: Simplify right side
    261,881.72x = 56,448,206,838.24
  5. Step 5: Solve for x
    x = 56,448,206,838.24/261,881.72
  6. Step 6: Final answer
    x = 215,548.48

Related Problems

Find fourth proportional to 130,940.86, 196,497.42 and 71,818
Half scale
Find fourth proportional to 523,763.44, 785,989.68 and 287,272
Double scale
Find fourth proportional to 261,882.72, 392,996.34 and 143,637
Similar ratio
Find fourth proportional to 392,822.58, 589,492.26 and 215,454
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.