Home / 261,114-390,681

Finding the Third Proportional to 261,114 and 390,681

Calculator

Solution

The third proportional to 261,114 and 390,681 is: 584,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,114 : 390,681 = 390,681 : x
  2. Step 2: Convert to fraction form
    261,114/390,681 = 390,681/x
  3. Step 3: Cross multiply
    261,114x = 390,681 × 390,681
  4. Step 4: Simplify right side
    261,114x = 152,631,643,761
  5. Step 5: Solve for x
    x = 152,631,643,761/261,114
  6. Step 6: Final answer
    x = 584,540.25

Related Problems

Find third proportional to 130,557 and 195,340.50
Half scale
Find third proportional to 522,228 and 781,362
Double scale
Find third proportional to 261,116 and 390,684
Similar ratio
Find third proportional to 391,671 and 586,021.50
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.