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Finding the Fourth Proportional to 543,648.90, 815,409.96 and 144,320.70

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Solution

The fourth proportional to 543,648.90, 815,409.96 and 144,320.70 is: 216,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,648.90 : 815,409.96 = 144,320.70 : x
  2. Step 2: Convert to fraction form
    543,648.90/815,409.96 = 144,320.70/x
  3. Step 3: Cross multiply
    543,648.90x = 815,409.96 × 144,320.70
  4. Step 4: Simplify right side
    543,648.90x = 117,680,536,214.17
  5. Step 5: Solve for x
    x = 117,680,536,214.17/543,648.90
  6. Step 6: Final answer
    x = 216,464.22

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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.