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Finding the Fourth Proportional to 279,881.76, 419,447.16 and 153,331.02

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Solution

The fourth proportional to 279,881.76, 419,447.16 and 153,331.02 is: 229,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,881.76 : 419,447.16 = 153,331.02 : x
  2. Step 2: Convert to fraction form
    279,881.76/419,447.16 = 153,331.02/x
  3. Step 3: Cross multiply
    279,881.76x = 419,447.16 × 153,331.02
  4. Step 4: Simplify right side
    279,881.76x = 64,314,260,878.90
  5. Step 5: Solve for x
    x = 64,314,260,878.90/279,881.76
  6. Step 6: Final answer
    x = 229,790.83

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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.