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Finding the Fourth Proportional to 390,335.52, 586,436.40 and 250,367.52

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Solution

The fourth proportional to 390,335.52, 586,436.40 and 250,367.52 is: 376,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,335.52 : 586,436.40 = 250,367.52 : x
  2. Step 2: Convert to fraction form
    390,335.52/586,436.40 = 250,367.52/x
  3. Step 3: Cross multiply
    390,335.52x = 586,436.40 × 250,367.52
  4. Step 4: Simplify right side
    390,335.52x = 146,824,627,105.73
  5. Step 5: Solve for x
    x = 146,824,627,105.73/390,335.52
  6. Step 6: Final answer
    x = 376,149.80

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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.