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Finding the Fourth Proportional to 389,708.10, 584,562.15 and 239,461.20

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Solution

The fourth proportional to 389,708.10, 584,562.15 and 239,461.20 is: 359,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,708.10 : 584,562.15 = 239,461.20 : x
  2. Step 2: Convert to fraction form
    389,708.10/584,562.15 = 239,461.20/x
  3. Step 3: Cross multiply
    389,708.10x = 584,562.15 × 239,461.20
  4. Step 4: Simplify right side
    389,708.10x = 139,979,953,913.58
  5. Step 5: Solve for x
    x = 139,979,953,913.58/389,708.10
  6. Step 6: Final answer
    x = 359,191.80

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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.