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Finding the Fourth Proportional to 247,855.55, 342,039.81 and 140,446.05

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Solution

The fourth proportional to 247,855.55, 342,039.81 and 140,446.05 is: 193,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,855.55 : 342,039.81 = 140,446.05 : x
  2. Step 2: Convert to fraction form
    247,855.55/342,039.81 = 140,446.05/x
  3. Step 3: Cross multiply
    247,855.55x = 342,039.81 × 140,446.05
  4. Step 4: Simplify right side
    247,855.55x = 48,038,141,425.25
  5. Step 5: Solve for x
    x = 48,038,141,425.25/247,855.55
  6. Step 6: Final answer
    x = 193,815.08

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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.