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Finding the Fourth Proportional to 279,159.93, 385,221.74 and 151,832.79

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Solution

The fourth proportional to 279,159.93, 385,221.74 and 151,832.79 is: 209,518.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,159.93 : 385,221.74 = 151,832.79 : x
  2. Step 2: Convert to fraction form
    279,159.93/385,221.74 = 151,832.79/x
  3. Step 3: Cross multiply
    279,159.93x = 385,221.74 × 151,832.79
  4. Step 4: Simplify right side
    279,159.93x = 58,489,290,006.33
  5. Step 5: Solve for x
    x = 58,489,290,006.33/279,159.93
  6. Step 6: Final answer
    x = 209,518.93

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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.