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Finding the Fourth Proportional to 355,987.29, 534,350.10 and 238,479.78

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Solution

The fourth proportional to 355,987.29, 534,350.10 and 238,479.78 is: 357,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,987.29 : 534,350.10 = 238,479.78 : x
  2. Step 2: Convert to fraction form
    355,987.29/534,350.10 = 238,479.78/x
  3. Step 3: Cross multiply
    355,987.29x = 534,350.10 × 238,479.78
  4. Step 4: Simplify right side
    355,987.29x = 127,431,694,290.98
  5. Step 5: Solve for x
    x = 127,431,694,290.98/355,987.29
  6. Step 6: Final answer
    x = 357,966.98

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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.