Home / 278,650.16-417,919.32-136,434.12

Finding the Fourth Proportional to 278,650.16, 417,919.32 and 136,434.12

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Solution

The fourth proportional to 278,650.16, 417,919.32 and 136,434.12 is: 204,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,650.16 : 417,919.32 = 136,434.12 : x
  2. Step 2: Convert to fraction form
    278,650.16/417,919.32 = 136,434.12/x
  3. Step 3: Cross multiply
    278,650.16x = 417,919.32 × 136,434.12
  4. Step 4: Simplify right side
    278,650.16x = 57,018,454,655.20
  5. Step 5: Solve for x
    x = 57,018,454,655.20/278,650.16
  6. Step 6: Final answer
    x = 204,623.80

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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.