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Finding the Fourth Proportional to 247,081.83, 370,649.99 and 78,562.74

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Solution

The fourth proportional to 247,081.83, 370,649.99 and 78,562.74 is: 117,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,081.83 : 370,649.99 = 78,562.74 : x
  2. Step 2: Convert to fraction form
    247,081.83/370,649.99 = 78,562.74/x
  3. Step 3: Cross multiply
    247,081.83x = 370,649.99 × 78,562.74
  4. Step 4: Simplify right side
    247,081.83x = 29,119,276,922.92
  5. Step 5: Solve for x
    x = 29,119,276,922.92/247,081.83
  6. Step 6: Final answer
    x = 117,852.77

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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.