Home / 294,979.20-442,612.80-137,126.40

Finding the Fourth Proportional to 294,979.20, 442,612.80 and 137,126.40

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Solution

The fourth proportional to 294,979.20, 442,612.80 and 137,126.40 is: 205,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,979.20 : 442,612.80 = 137,126.40 : x
  2. Step 2: Convert to fraction form
    294,979.20/442,612.80 = 137,126.40/x
  3. Step 3: Cross multiply
    294,979.20x = 442,612.80 × 137,126.40
  4. Step 4: Simplify right side
    294,979.20x = 60,693,899,857.92
  5. Step 5: Solve for x
    x = 60,693,899,857.92/294,979.20
  6. Step 6: Final answer
    x = 205,756.54

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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.