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Finding the Fourth Proportional to 219,327.40, 329,120.70 and 144,663.40

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Solution

The fourth proportional to 219,327.40, 329,120.70 and 144,663.40 is: 217,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,327.40 : 329,120.70 = 144,663.40 : x
  2. Step 2: Convert to fraction form
    219,327.40/329,120.70 = 144,663.40/x
  3. Step 3: Cross multiply
    219,327.40x = 329,120.70 × 144,663.40
  4. Step 4: Simplify right side
    219,327.40x = 47,611,719,472.38
  5. Step 5: Solve for x
    x = 47,611,719,472.38/219,327.40
  6. Step 6: Final answer
    x = 217,080.58

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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.