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Finding the Fourth Proportional to 543,614.70, 815,421.78 and 169,637.70

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Solution

The fourth proportional to 543,614.70, 815,421.78 and 169,637.70 is: 254,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,614.70 : 815,421.78 = 169,637.70 : x
  2. Step 2: Convert to fraction form
    543,614.70/815,421.78 = 169,637.70/x
  3. Step 3: Cross multiply
    543,614.70x = 815,421.78 × 169,637.70
  4. Step 4: Simplify right side
    543,614.70x = 138,326,275,289.11
  5. Step 5: Solve for x
    x = 138,326,275,289.11/543,614.70
  6. Step 6: Final answer
    x = 254,456.47

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1.5x scale

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.