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Finding the Fourth Proportional to 145,424.79, 218,142.06 and 40,234.95

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Solution

The fourth proportional to 145,424.79, 218,142.06 and 40,234.95 is: 60,353.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.79 : 218,142.06 = 40,234.95 : x
  2. Step 2: Convert to fraction form
    145,424.79/218,142.06 = 40,234.95/x
  3. Step 3: Cross multiply
    145,424.79x = 218,142.06 × 40,234.95
  4. Step 4: Simplify right side
    145,424.79x = 8,776,934,877.00
  5. Step 5: Solve for x
    x = 8,776,934,877.00/145,424.79
  6. Step 6: Final answer
    x = 60,353.77

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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.