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Finding the Fourth Proportional to 423,700.57, 584,564.50 and 239,914

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Solution

The fourth proportional to 423,700.57, 584,564.50 and 239,914 is: 331,000.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,700.57 : 584,564.50 = 239,914 : x
  2. Step 2: Convert to fraction form
    423,700.57/584,564.50 = 239,914/x
  3. Step 3: Cross multiply
    423,700.57x = 584,564.50 × 239,914
  4. Step 4: Simplify right side
    423,700.57x = 140,245,207,453
  5. Step 5: Solve for x
    x = 140,245,207,453/423,700.57
  6. Step 6: Final answer
    x = 331,000.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.