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Finding the Fourth Proportional to 145,442.66, 218,167.70 and 40,262.54

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Solution

The fourth proportional to 145,442.66, 218,167.70 and 40,262.54 is: 60,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,442.66 : 218,167.70 = 40,262.54 : x
  2. Step 2: Convert to fraction form
    145,442.66/218,167.70 = 40,262.54/x
  3. Step 3: Cross multiply
    145,442.66x = 218,167.70 × 40,262.54
  4. Step 4: Simplify right side
    145,442.66x = 8,783,984,455.81
  5. Step 5: Solve for x
    x = 8,783,984,455.81/145,442.66
  6. Step 6: Final answer
    x = 60,394.83

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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.