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Finding the Fourth Proportional to 385,662.21, 532,244.57 and 284,151.39

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Solution

The fourth proportional to 385,662.21, 532,244.57 and 284,151.39 is: 392,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,662.21 : 532,244.57 = 284,151.39 : x
  2. Step 2: Convert to fraction form
    385,662.21/532,244.57 = 284,151.39/x
  3. Step 3: Cross multiply
    385,662.21x = 532,244.57 × 284,151.39
  4. Step 4: Simplify right side
    385,662.21x = 151,238,032,964.70
  5. Step 5: Solve for x
    x = 151,238,032,964.70/385,662.21
  6. Step 6: Final answer
    x = 392,151.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.