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Finding the Fourth Proportional to 219,679.92, 329,585.52 and 155,761.20

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Solution

The fourth proportional to 219,679.92, 329,585.52 and 155,761.20 is: 233,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,679.92 : 329,585.52 = 155,761.20 : x
  2. Step 2: Convert to fraction form
    219,679.92/329,585.52 = 155,761.20/x
  3. Step 3: Cross multiply
    219,679.92x = 329,585.52 × 155,761.20
  4. Step 4: Simplify right side
    219,679.92x = 51,336,636,097.82
  5. Step 5: Solve for x
    x = 51,336,636,097.82/219,679.92
  6. Step 6: Final answer
    x = 233,688.34

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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.