Home / 247,340,590.20-371,376,989.10-138,383,375.40

Finding the Fourth Proportional to 247,340,590.20, 371,376,989.10 and 138,383,375.40

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Solution

The fourth proportional to 247,340,590.20, 371,376,989.10 and 138,383,375.40 is: 207,779,892.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,340,590.20 : 371,376,989.10 = 138,383,375.40 : x
  2. Step 2: Convert to fraction form
    247,340,590.20/371,376,989.10 = 138,383,375.40/x
  3. Step 3: Cross multiply
    247,340,590.20x = 371,376,989.10 × 138,383,375.40
  4. Step 4: Simplify right side
    247,340,590.20x = 51,392,401,297,547,016
  5. Step 5: Solve for x
    x = 51,392,401,297,547,016/247,340,590.20
  6. Step 6: Final answer
    x = 207,779,892.72

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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.