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Finding the Fourth Proportional to 415,350.89, 623,026.26 and 99,807.79

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Solution

The fourth proportional to 415,350.89, 623,026.26 and 99,807.79 is: 149,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,350.89 : 623,026.26 = 99,807.79 : x
  2. Step 2: Convert to fraction form
    415,350.89/623,026.26 = 99,807.79/x
  3. Step 3: Cross multiply
    415,350.89x = 623,026.26 × 99,807.79
  4. Step 4: Simplify right side
    415,350.89x = 62,182,874,122.57
  5. Step 5: Solve for x
    x = 62,182,874,122.57/415,350.89
  6. Step 6: Final answer
    x = 149,711.67

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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.