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Finding the Fourth Proportional to 219,798.76, 329,724.58 and 77,614.78

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Solution

The fourth proportional to 219,798.76, 329,724.58 and 77,614.78 is: 116,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,798.76 : 329,724.58 = 77,614.78 : x
  2. Step 2: Convert to fraction form
    219,798.76/329,724.58 = 77,614.78/x
  3. Step 3: Cross multiply
    219,798.76x = 329,724.58 × 77,614.78
  4. Step 4: Simplify right side
    219,798.76x = 25,591,500,737.29
  5. Step 5: Solve for x
    x = 25,591,500,737.29/219,798.76
  6. Step 6: Final answer
    x = 116,431.51

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1.5x scale

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.