Home / 438,421.20-657,631.80-157,837.20

Finding the Fourth Proportional to 438,421.20, 657,631.80 and 157,837.20

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Solution

The fourth proportional to 438,421.20, 657,631.80 and 157,837.20 is: 236,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,421.20 : 657,631.80 = 157,837.20 : x
  2. Step 2: Convert to fraction form
    438,421.20/657,631.80 = 157,837.20/x
  3. Step 3: Cross multiply
    438,421.20x = 657,631.80 × 157,837.20
  4. Step 4: Simplify right side
    438,421.20x = 103,798,761,942.96
  5. Step 5: Solve for x
    x = 103,798,761,942.96/438,421.20
  6. Step 6: Final answer
    x = 236,755.80

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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.