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Finding the Fourth Proportional to 145,558.74, 218,338.11 and 40,377.69

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Solution

The fourth proportional to 145,558.74, 218,338.11 and 40,377.69 is: 60,566.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,558.74 : 218,338.11 = 40,377.69 : x
  2. Step 2: Convert to fraction form
    145,558.74/218,338.11 = 40,377.69/x
  3. Step 3: Cross multiply
    145,558.74x = 218,338.11 × 40,377.69
  4. Step 4: Simplify right side
    145,558.74x = 8,815,988,520.77
  5. Step 5: Solve for x
    x = 8,815,988,520.77/145,558.74
  6. Step 6: Final answer
    x = 60,566.54

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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.