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Finding the Fourth Proportional to 279,701.10, 419,551.65 and 92,712.60

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Solution

The fourth proportional to 279,701.10, 419,551.65 and 92,712.60 is: 139,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,701.10 : 419,551.65 = 92,712.60 : x
  2. Step 2: Convert to fraction form
    279,701.10/419,551.65 = 92,712.60/x
  3. Step 3: Cross multiply
    279,701.10x = 419,551.65 × 92,712.60
  4. Step 4: Simplify right side
    279,701.10x = 38,897,724,305.79
  5. Step 5: Solve for x
    x = 38,897,724,305.79/279,701.10
  6. Step 6: Final answer
    x = 139,068.90

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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.