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Finding the Fourth Proportional to 498,415.20, 747,732.15 and 245,816.70

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Solution

The fourth proportional to 498,415.20, 747,732.15 and 245,816.70 is: 368,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,415.20 : 747,732.15 = 245,816.70 : x
  2. Step 2: Convert to fraction form
    498,415.20/747,732.15 = 245,816.70/x
  3. Step 3: Cross multiply
    498,415.20x = 747,732.15 × 245,816.70
  4. Step 4: Simplify right side
    498,415.20x = 183,805,049,596.91
  5. Step 5: Solve for x
    x = 183,805,049,596.91/498,415.20
  6. Step 6: Final answer
    x = 368,778.98

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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.