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Finding the Fourth Proportional to 279,159.80, 385,221.57 and 151,832.66

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Solution

The fourth proportional to 279,159.80, 385,221.57 and 151,832.66 is: 209,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,159.80 : 385,221.57 = 151,832.66 : x
  2. Step 2: Convert to fraction form
    279,159.80/385,221.57 = 151,832.66/x
  3. Step 3: Cross multiply
    279,159.80x = 385,221.57 × 151,832.66
  4. Step 4: Simplify right side
    279,159.80x = 58,489,215,662.48
  5. Step 5: Solve for x
    x = 58,489,215,662.48/279,159.80
  6. Step 6: Final answer
    x = 209,518.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.