Home / 438,322.31-657,088.72-157,642.19

Finding the Fourth Proportional to 438,322.31, 657,088.72 and 157,642.19

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Solution

The fourth proportional to 438,322.31, 657,088.72 and 157,642.19 is: 236,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,322.31 : 657,088.72 = 157,642.19 : x
  2. Step 2: Convert to fraction form
    438,322.31/657,088.72 = 157,642.19/x
  3. Step 3: Cross multiply
    438,322.31x = 657,088.72 × 157,642.19
  4. Step 4: Simplify right side
    438,322.31x = 103,584,904,845.10
  5. Step 5: Solve for x
    x = 103,584,904,845.10/438,322.31
  6. Step 6: Final answer
    x = 236,321.32

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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.