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Finding the Fourth Proportional to 206,844,404.40, 310,266,606.60 and 120,680,103.60

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Solution

The fourth proportional to 206,844,404.40, 310,266,606.60 and 120,680,103.60 is: 181,020,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,844,404.40 : 310,266,606.60 = 120,680,103.60 : x
  2. Step 2: Convert to fraction form
    206,844,404.40/310,266,606.60 = 120,680,103.60/x
  3. Step 3: Cross multiply
    206,844,404.40x = 310,266,606.60 × 120,680,103.60
  4. Step 4: Simplify right side
    206,844,404.40x = 37,443,006,228,108,448
  5. Step 5: Solve for x
    x = 37,443,006,228,108,448/206,844,404.40
  6. Step 6: Final answer
    x = 181,020,155.40

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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.