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Finding the Fourth Proportional to 543,375.90, 815,027.40 and 144,008.10

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Solution

The fourth proportional to 543,375.90, 815,027.40 and 144,008.10 is: 216,002.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,375.90 : 815,027.40 = 144,008.10 : x
  2. Step 2: Convert to fraction form
    543,375.90/815,027.40 = 144,008.10/x
  3. Step 3: Cross multiply
    543,375.90x = 815,027.40 × 144,008.10
  4. Step 4: Simplify right side
    543,375.90x = 117,370,547,321.94
  5. Step 5: Solve for x
    x = 117,370,547,321.94/543,375.90
  6. Step 6: Final answer
    x = 216,002.49

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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.