Home / 247,187.40-370,777.50-78,705.78

Finding the Fourth Proportional to 247,187.40, 370,777.50 and 78,705.78

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Solution

The fourth proportional to 247,187.40, 370,777.50 and 78,705.78 is: 118,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,187.40 : 370,777.50 = 78,705.78 : x
  2. Step 2: Convert to fraction form
    247,187.40/370,777.50 = 78,705.78/x
  3. Step 3: Cross multiply
    247,187.40x = 370,777.50 × 78,705.78
  4. Step 4: Simplify right side
    247,187.40x = 29,182,332,343.95
  5. Step 5: Solve for x
    x = 29,182,332,343.95/247,187.40
  6. Step 6: Final answer
    x = 118,057.52

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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.