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Finding the Fourth Proportional to 423,423.39, 584,309.16 and 239,658.02

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Solution

The fourth proportional to 423,423.39, 584,309.16 and 239,658.02 is: 330,719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,423.39 : 584,309.16 = 239,658.02 : x
  2. Step 2: Convert to fraction form
    423,423.39/584,309.16 = 239,658.02/x
  3. Step 3: Cross multiply
    423,423.39x = 584,309.16 × 239,658.02
  4. Step 4: Simplify right side
    423,423.39x = 140,034,376,353.46
  5. Step 5: Solve for x
    x = 140,034,376,353.46/423,423.39
  6. Step 6: Final answer
    x = 330,719.51

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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.