Home / 229,556-316,787.28-128,954

Finding the Fourth Proportional to 229,556, 316,787.28 and 128,954

Calculator

Solution

The fourth proportional to 229,556, 316,787.28 and 128,954 is: 177,956.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,556 : 316,787.28 = 128,954 : x
  2. Step 2: Convert to fraction form
    229,556/316,787.28 = 128,954/x
  3. Step 3: Cross multiply
    229,556x = 316,787.28 × 128,954
  4. Step 4: Simplify right side
    229,556x = 40,850,986,905.12
  5. Step 5: Solve for x
    x = 40,850,986,905.12/229,556
  6. Step 6: Final answer
    x = 177,956.52

Related Problems

Find fourth proportional to 114,778, 158,393.64 and 64,477
Half scale
Find fourth proportional to 459,112, 633,574.56 and 257,908
Double scale
Find fourth proportional to 229,557, 316,788.66 and 128,955
Similar ratio
Find fourth proportional to 344,334, 475,180.92 and 193,431
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.