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Finding the Fourth Proportional to 269,663,386.40, 404,495,079.60 and 266,976,000.80

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Solution

The fourth proportional to 269,663,386.40, 404,495,079.60 and 266,976,000.80 is: 400,464,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,663,386.40 : 404,495,079.60 = 266,976,000.80 : x
  2. Step 2: Convert to fraction form
    269,663,386.40/404,495,079.60 = 266,976,000.80/x
  3. Step 3: Cross multiply
    269,663,386.40x = 404,495,079.60 × 266,976,000.80
  4. Step 4: Simplify right side
    269,663,386.40x = 107,990,478,694,885,680
  5. Step 5: Solve for x
    x = 107,990,478,694,885,680/269,663,386.40
  6. Step 6: Final answer
    x = 400,464,001.20

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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.