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Finding the Fourth Proportional to 535,280.70, 802,240.65 and 219,380.70

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Solution

The fourth proportional to 535,280.70, 802,240.65 and 219,380.70 is: 328,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,280.70 : 802,240.65 = 219,380.70 : x
  2. Step 2: Convert to fraction form
    535,280.70/802,240.65 = 219,380.70/x
  3. Step 3: Cross multiply
    535,280.70x = 802,240.65 × 219,380.70
  4. Step 4: Simplify right side
    535,280.70x = 175,996,115,365.46
  5. Step 5: Solve for x
    x = 175,996,115,365.46/535,280.70
  6. Step 6: Final answer
    x = 328,792.19

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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.