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Finding the Fourth Proportional to 365,142.18, 547,657.84 and 128,429.52

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Solution

The fourth proportional to 365,142.18, 547,657.84 and 128,429.52 is: 192,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,142.18 : 547,657.84 = 128,429.52 : x
  2. Step 2: Convert to fraction form
    365,142.18/547,657.84 = 128,429.52/x
  3. Step 3: Cross multiply
    365,142.18x = 547,657.84 × 128,429.52
  4. Step 4: Simplify right side
    365,142.18x = 70,335,433,515.44
  5. Step 5: Solve for x
    x = 70,335,433,515.44/365,142.18
  6. Step 6: Final answer
    x = 192,624.78

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1.5x scale

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.