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Finding the Fourth Proportional to 385,234.90, 538,279.10 and 385,234.90

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Solution

The fourth proportional to 385,234.90, 538,279.10 and 385,234.90 is: 538,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,234.90 : 538,279.10 = 385,234.90 : x
  2. Step 2: Convert to fraction form
    385,234.90/538,279.10 = 385,234.90/x
  3. Step 3: Cross multiply
    385,234.90x = 538,279.10 × 385,234.90
  4. Step 4: Simplify right side
    385,234.90x = 207,363,895,260.59
  5. Step 5: Solve for x
    x = 207,363,895,260.59/385,234.90
  6. Step 6: Final answer
    x = 538,279.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.