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Finding the Fourth Proportional to 279,446.15, 417,881.63 and 207,534.86

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Solution

The fourth proportional to 279,446.15, 417,881.63 and 207,534.86 is: 310,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,446.15 : 417,881.63 = 207,534.86 : x
  2. Step 2: Convert to fraction form
    279,446.15/417,881.63 = 207,534.86/x
  3. Step 3: Cross multiply
    279,446.15x = 417,881.63 × 207,534.86
  4. Step 4: Simplify right side
    279,446.15x = 86,725,005,575.11
  5. Step 5: Solve for x
    x = 86,725,005,575.11/279,446.15
  6. Step 6: Final answer
    x = 310,346.04

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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.