Home / 218,830.97-328,115.03-85,552.49

Finding the Fourth Proportional to 218,830.97, 328,115.03 and 85,552.49

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Solution

The fourth proportional to 218,830.97, 328,115.03 and 85,552.49 is: 128,277.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,830.97 : 328,115.03 = 85,552.49 : x
  2. Step 2: Convert to fraction form
    218,830.97/328,115.03 = 85,552.49/x
  3. Step 3: Cross multiply
    218,830.97x = 328,115.03 × 85,552.49
  4. Step 4: Simplify right side
    218,830.97x = 28,071,055,754.59
  5. Step 5: Solve for x
    x = 28,071,055,754.59/218,830.97
  6. Step 6: Final answer
    x = 128,277.35

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1.5x scale

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.