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Finding the Fourth Proportional to 543,302.40, 815,031.24 and 169,354.56

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Solution

The fourth proportional to 543,302.40, 815,031.24 and 169,354.56 is: 254,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,302.40 : 815,031.24 = 169,354.56 : x
  2. Step 2: Convert to fraction form
    543,302.40/815,031.24 = 169,354.56/x
  3. Step 3: Cross multiply
    543,302.40x = 815,031.24 × 169,354.56
  4. Step 4: Simplify right side
    543,302.40x = 138,029,257,036.45
  5. Step 5: Solve for x
    x = 138,029,257,036.45/543,302.40
  6. Step 6: Final answer
    x = 254,056.04

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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.