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Finding the Fourth Proportional to 269,663,385.40, 404,495,078.10 and 266,975,999.80

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Solution

The fourth proportional to 269,663,385.40, 404,495,078.10 and 266,975,999.80 is: 400,463,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,663,385.40 : 404,495,078.10 = 266,975,999.80 : x
  2. Step 2: Convert to fraction form
    269,663,385.40/404,495,078.10 = 266,975,999.80/x
  3. Step 3: Cross multiply
    269,663,385.40x = 404,495,078.10 × 266,975,999.80
  4. Step 4: Simplify right side
    269,663,385.40x = 107,990,477,889,926,592
  5. Step 5: Solve for x
    x = 107,990,477,889,926,592/269,663,385.40
  6. Step 6: Final answer
    x = 400,463,999.70

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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.