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Finding the Fourth Proportional to 415,562.85, 623,344.45 and 100,019.76

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Solution

The fourth proportional to 415,562.85, 623,344.45 and 100,019.76 is: 150,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,562.85 : 623,344.45 = 100,019.76 : x
  2. Step 2: Convert to fraction form
    415,562.85/623,344.45 = 100,019.76/x
  3. Step 3: Cross multiply
    415,562.85x = 623,344.45 × 100,019.76
  4. Step 4: Simplify right side
    415,562.85x = 62,346,759,698.74
  5. Step 5: Solve for x
    x = 62,346,759,698.74/415,562.85
  6. Step 6: Final answer
    x = 150,029.68

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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.