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Finding the Fourth Proportional to 515,340.30, 772,650.45 and 304,869.90

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Solution

The fourth proportional to 515,340.30, 772,650.45 and 304,869.90 is: 457,091.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,340.30 : 772,650.45 = 304,869.90 : x
  2. Step 2: Convert to fraction form
    515,340.30/772,650.45 = 304,869.90/x
  3. Step 3: Cross multiply
    515,340.30x = 772,650.45 × 304,869.90
  4. Step 4: Simplify right side
    515,340.30x = 235,557,865,426.46
  5. Step 5: Solve for x
    x = 235,557,865,426.46/515,340.30
  6. Step 6: Final answer
    x = 457,091.88

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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.