Home / 391,523,480.73-540,316,279.49-215,325,103.32

Finding the Fourth Proportional to 391,523,480.73, 540,316,279.49 and 215,325,103.32

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Solution

The fourth proportional to 391,523,480.73, 540,316,279.49 and 215,325,103.32 is: 297,156,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,523,480.73 : 540,316,279.49 = 215,325,103.32 : x
  2. Step 2: Convert to fraction form
    391,523,480.73/540,316,279.49 = 215,325,103.32/x
  3. Step 3: Cross multiply
    391,523,480.73x = 540,316,279.49 × 215,325,103.32
  4. Step 4: Simplify right side
    391,523,480.73x = 116,343,658,705,585,616
  5. Step 5: Solve for x
    x = 116,343,658,705,585,616/391,523,480.73
  6. Step 6: Final answer
    x = 297,156,273.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.