Home / 278,173,422.10-417,171,543.72-91,384,007.68

Finding the Fourth Proportional to 278,173,422.10, 417,171,543.72 and 91,384,007.68

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Solution

The fourth proportional to 278,173,422.10, 417,171,543.72 and 91,384,007.68 is: 137,046,908.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,173,422.10 : 417,171,543.72 = 91,384,007.68 : x
  2. Step 2: Convert to fraction form
    278,173,422.10/417,171,543.72 = 91,384,007.68/x
  3. Step 3: Cross multiply
    278,173,422.10x = 417,171,543.72 × 91,384,007.68
  4. Step 4: Simplify right side
    278,173,422.10x = 38,122,807,555,185,944
  5. Step 5: Solve for x
    x = 38,122,807,555,185,944/278,173,422.10
  6. Step 6: Final answer
    x = 137,046,908.61

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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.