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Finding the Fourth Proportional to 170,788.80, 256,490.40 and 165,259.20

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Solution

The fourth proportional to 170,788.80, 256,490.40 and 165,259.20 is: 248,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,788.80 : 256,490.40 = 165,259.20 : x
  2. Step 2: Convert to fraction form
    170,788.80/256,490.40 = 165,259.20/x
  3. Step 3: Cross multiply
    170,788.80x = 256,490.40 × 165,259.20
  4. Step 4: Simplify right side
    170,788.80x = 42,387,398,311.68
  5. Step 5: Solve for x
    x = 42,387,398,311.68/170,788.80
  6. Step 6: Final answer
    x = 248,186.05

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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.