Home / 247,308.28-370,989.62-78,789.40

Finding the Fourth Proportional to 247,308.28, 370,989.62 and 78,789.40

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Solution

The fourth proportional to 247,308.28, 370,989.62 and 78,789.40 is: 118,192.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,308.28 : 370,989.62 = 78,789.40 : x
  2. Step 2: Convert to fraction form
    247,308.28/370,989.62 = 78,789.40/x
  3. Step 3: Cross multiply
    247,308.28x = 370,989.62 × 78,789.40
  4. Step 4: Simplify right side
    247,308.28x = 29,230,049,566.03
  5. Step 5: Solve for x
    x = 29,230,049,566.03/247,308.28
  6. Step 6: Final answer
    x = 118,192.77

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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.