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Finding the Fourth Proportional to 535,377.28, 802,931.20 and 219,921.28

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Solution

The fourth proportional to 535,377.28, 802,931.20 and 219,921.28 is: 329,826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,377.28 : 802,931.20 = 219,921.28 : x
  2. Step 2: Convert to fraction form
    535,377.28/802,931.20 = 219,921.28/x
  3. Step 3: Cross multiply
    535,377.28x = 802,931.20 × 219,921.28
  4. Step 4: Simplify right side
    535,377.28x = 176,581,657,255.94
  5. Step 5: Solve for x
    x = 176,581,657,255.94/535,377.28
  6. Step 6: Final answer
    x = 329,826.58

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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.