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Finding the Fourth Proportional to 576,520.16, 864,312.78 and 239,812.72

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Solution

The fourth proportional to 576,520.16, 864,312.78 and 239,812.72 is: 359,524.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,520.16 : 864,312.78 = 239,812.72 : x
  2. Step 2: Convert to fraction form
    576,520.16/864,312.78 = 239,812.72/x
  3. Step 3: Cross multiply
    576,520.16x = 864,312.78 × 239,812.72
  4. Step 4: Simplify right side
    576,520.16x = 207,273,198,702.56
  5. Step 5: Solve for x
    x = 207,273,198,702.56/576,520.16
  6. Step 6: Final answer
    x = 359,524.63

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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.