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Finding the Fourth Proportional to 438,501.12, 657,952.56 and 238,521.84

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Solution

The fourth proportional to 438,501.12, 657,952.56 and 238,521.84 is: 357,892.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,501.12 : 657,952.56 = 238,521.84 : x
  2. Step 2: Convert to fraction form
    438,501.12/657,952.56 = 238,521.84/x
  3. Step 3: Cross multiply
    438,501.12x = 657,952.56 × 238,521.84
  4. Step 4: Simplify right side
    438,501.12x = 156,936,055,243.91
  5. Step 5: Solve for x
    x = 156,936,055,243.91/438,501.12
  6. Step 6: Final answer
    x = 357,892.03

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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.