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Finding the Fourth Proportional to 498,328.20, 747,601.65 and 245,729.70

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Solution

The fourth proportional to 498,328.20, 747,601.65 and 245,729.70 is: 368,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,328.20 : 747,601.65 = 245,729.70 : x
  2. Step 2: Convert to fraction form
    498,328.20/747,601.65 = 245,729.70/x
  3. Step 3: Cross multiply
    498,328.20x = 747,601.65 × 245,729.70
  4. Step 4: Simplify right side
    498,328.20x = 183,707,929,174.01
  5. Step 5: Solve for x
    x = 183,707,929,174.01/498,328.20
  6. Step 6: Final answer
    x = 368,648.47

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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.