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Finding the Fourth Proportional to 643,866.64, 965,818.20 and 170,552.04

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Solution

The fourth proportional to 643,866.64, 965,818.20 and 170,552.04 is: 255,832.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,866.64 : 965,818.20 = 170,552.04 : x
  2. Step 2: Convert to fraction form
    643,866.64/965,818.20 = 170,552.04/x
  3. Step 3: Cross multiply
    643,866.64x = 965,818.20 × 170,552.04
  4. Step 4: Simplify right side
    643,866.64x = 164,722,264,279.13
  5. Step 5: Solve for x
    x = 164,722,264,279.13/643,866.64
  6. Step 6: Final answer
    x = 255,832.89

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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.