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Finding the Fourth Proportional to 488,160.86, 729,272.55 and 315,979.85

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Solution

The fourth proportional to 488,160.86, 729,272.55 and 315,979.85 is: 472,048.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,160.86 : 729,272.55 = 315,979.85 : x
  2. Step 2: Convert to fraction form
    488,160.86/729,272.55 = 315,979.85/x
  3. Step 3: Cross multiply
    488,160.86x = 729,272.55 × 315,979.85
  4. Step 4: Simplify right side
    488,160.86x = 230,435,427,311.76
  5. Step 5: Solve for x
    x = 230,435,427,311.76/488,160.86
  6. Step 6: Final answer
    x = 472,048.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.