Home / 218,645,113.30-328,093,641.15-82,428,255.70

Finding the Fourth Proportional to 218,645,113.30, 328,093,641.15 and 82,428,255.70

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Solution

The fourth proportional to 218,645,113.30, 328,093,641.15 and 82,428,255.70 is: 123,689,874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,645,113.30 : 328,093,641.15 = 82,428,255.70 : x
  2. Step 2: Convert to fraction form
    218,645,113.30/328,093,641.15 = 82,428,255.70/x
  3. Step 3: Cross multiply
    218,645,113.30x = 328,093,641.15 × 82,428,255.70
  4. Step 4: Simplify right side
    218,645,113.30x = 27,044,186,546,256,240
  5. Step 5: Solve for x
    x = 27,044,186,546,256,240/218,645,113.30
  6. Step 6: Final answer
    x = 123,689,874.14

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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.