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Finding the Fourth Proportional to 543,311.20, 814,966.80 and 144,013.60

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Solution

The fourth proportional to 543,311.20, 814,966.80 and 144,013.60 is: 216,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,311.20 : 814,966.80 = 144,013.60 : x
  2. Step 2: Convert to fraction form
    543,311.20/814,966.80 = 144,013.60/x
  3. Step 3: Cross multiply
    543,311.20x = 814,966.80 × 144,013.60
  4. Step 4: Simplify right side
    543,311.20x = 117,366,302,748.48
  5. Step 5: Solve for x
    x = 117,366,302,748.48/543,311.20
  6. Step 6: Final answer
    x = 216,020.40

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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.