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Finding the Fourth Proportional to 147,040.72, 220,543.54 and 40,435.50

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Solution

The fourth proportional to 147,040.72, 220,543.54 and 40,435.50 is: 60,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,040.72 : 220,543.54 = 40,435.50 : x
  2. Step 2: Convert to fraction form
    147,040.72/220,543.54 = 40,435.50/x
  3. Step 3: Cross multiply
    147,040.72x = 220,543.54 × 40,435.50
  4. Step 4: Simplify right side
    147,040.72x = 8,917,788,311.67
  5. Step 5: Solve for x
    x = 8,917,788,311.67/147,040.72
  6. Step 6: Final answer
    x = 60,648.43

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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.