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Finding the Fourth Proportional to 318,316.48, 476,553.12 and 239,761.60

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Solution

The fourth proportional to 318,316.48, 476,553.12 and 239,761.60 is: 358,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,316.48 : 476,553.12 = 239,761.60 : x
  2. Step 2: Convert to fraction form
    318,316.48/476,553.12 = 239,761.60/x
  3. Step 3: Cross multiply
    318,316.48x = 476,553.12 × 239,761.60
  4. Step 4: Simplify right side
    318,316.48x = 114,259,138,536.19
  5. Step 5: Solve for x
    x = 114,259,138,536.19/318,316.48
  6. Step 6: Final answer
    x = 358,948.23

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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.