Home / 398,839.14-598,129.29-132,528.15

Finding the Fourth Proportional to 398,839.14, 598,129.29 and 132,528.15

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Solution

The fourth proportional to 398,839.14, 598,129.29 and 132,528.15 is: 198,749.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,839.14 : 598,129.29 = 132,528.15 : x
  2. Step 2: Convert to fraction form
    398,839.14/598,129.29 = 132,528.15/x
  3. Step 3: Cross multiply
    398,839.14x = 598,129.29 × 132,528.15
  4. Step 4: Simplify right side
    398,839.14x = 79,268,968,264.51
  5. Step 5: Solve for x
    x = 79,268,968,264.51/398,839.14
  6. Step 6: Final answer
    x = 198,749.22

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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.