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Finding the Fourth Proportional to 239,545.86, 330,559.74 and 148,899.50

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Solution

The fourth proportional to 239,545.86, 330,559.74 and 148,899.50 is: 205,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,545.86 : 330,559.74 = 148,899.50 : x
  2. Step 2: Convert to fraction form
    239,545.86/330,559.74 = 148,899.50/x
  3. Step 3: Cross multiply
    239,545.86x = 330,559.74 × 148,899.50
  4. Step 4: Simplify right side
    239,545.86x = 49,220,180,006.13
  5. Step 5: Solve for x
    x = 49,220,180,006.13/239,545.86
  6. Step 6: Final answer
    x = 205,472.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.