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Finding the Fourth Proportional to 543,617.04, 815,590.80 and 169,643.28

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Solution

The fourth proportional to 543,617.04, 815,590.80 and 169,643.28 is: 254,516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,617.04 : 815,590.80 = 169,643.28 : x
  2. Step 2: Convert to fraction form
    543,617.04/815,590.80 = 169,643.28/x
  3. Step 3: Cross multiply
    543,617.04x = 815,590.80 × 169,643.28
  4. Step 4: Simplify right side
    543,617.04x = 138,359,498,449.82
  5. Step 5: Solve for x
    x = 138,359,498,449.82/543,617.04
  6. Step 6: Final answer
    x = 254,516.49

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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.