Home / 313,067,639.20-469,489,703.28-128,781,254.56

Finding the Fourth Proportional to 313,067,639.20, 469,489,703.28 and 128,781,254.56

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Solution

The fourth proportional to 313,067,639.20, 469,489,703.28 and 128,781,254.56 is: 193,125,910.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,067,639.20 : 469,489,703.28 = 128,781,254.56 : x
  2. Step 2: Convert to fraction form
    313,067,639.20/469,489,703.28 = 128,781,254.56/x
  3. Step 3: Cross multiply
    313,067,639.20x = 469,489,703.28 × 128,781,254.56
  4. Step 4: Simplify right side
    313,067,639.20x = 60,461,472,991,400,544
  5. Step 5: Solve for x
    x = 60,461,472,991,400,544/313,067,639.20
  6. Step 6: Final answer
    x = 193,125,910.89

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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.