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Finding the Fourth Proportional to 205,555.89, 308,337.25 and 72,437.76

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Solution

The fourth proportional to 205,555.89, 308,337.25 and 72,437.76 is: 108,657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,555.89 : 308,337.25 = 72,437.76 : x
  2. Step 2: Convert to fraction form
    205,555.89/308,337.25 = 72,437.76/x
  3. Step 3: Cross multiply
    205,555.89x = 308,337.25 × 72,437.76
  4. Step 4: Simplify right side
    205,555.89x = 22,335,259,714.56
  5. Step 5: Solve for x
    x = 22,335,259,714.56/205,555.89
  6. Step 6: Final answer
    x = 108,657.84

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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.