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Finding the Fourth Proportional to 415,555.62, 623,333.56 and 100,012.52

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Solution

The fourth proportional to 415,555.62, 623,333.56 and 100,012.52 is: 150,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,555.62 : 623,333.56 = 100,012.52 : x
  2. Step 2: Convert to fraction form
    415,555.62/623,333.56 = 100,012.52/x
  3. Step 3: Cross multiply
    415,555.62x = 623,333.56 × 100,012.52
  4. Step 4: Simplify right side
    415,555.62x = 62,341,160,665.31
  5. Step 5: Solve for x
    x = 62,341,160,665.31/415,555.62
  6. Step 6: Final answer
    x = 150,018.81

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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.