Home / 391,170,107.20-539,811,590.88-212,552,432.32

Finding the Fourth Proportional to 391,170,107.20, 539,811,590.88 and 212,552,432.32

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Solution

The fourth proportional to 391,170,107.20, 539,811,590.88 and 212,552,432.32 is: 293,320,641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,170,107.20 : 539,811,590.88 = 212,552,432.32 : x
  2. Step 2: Convert to fraction form
    391,170,107.20/539,811,590.88 = 212,552,432.32/x
  3. Step 3: Cross multiply
    391,170,107.20x = 539,811,590.88 × 212,552,432.32
  4. Step 4: Simplify right side
    391,170,107.20x = 114,738,266,636,072,720
  5. Step 5: Solve for x
    x = 114,738,266,636,072,720/391,170,107.20
  6. Step 6: Final answer
    x = 293,320,641.13

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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.