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Finding the Fourth Proportional to 385,261.20, 577,891.80 and 100,951.20

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Solution

The fourth proportional to 385,261.20, 577,891.80 and 100,951.20 is: 151,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,261.20 : 577,891.80 = 100,951.20 : x
  2. Step 2: Convert to fraction form
    385,261.20/577,891.80 = 100,951.20/x
  3. Step 3: Cross multiply
    385,261.20x = 577,891.80 × 100,951.20
  4. Step 4: Simplify right side
    385,261.20x = 58,338,870,680.16
  5. Step 5: Solve for x
    x = 58,338,870,680.16/385,261.20
  6. Step 6: Final answer
    x = 151,426.80

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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.