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Finding the Fourth Proportional to 313,272,013.80, 469,908,020.70 and 266,914,612.20

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Solution

The fourth proportional to 313,272,013.80, 469,908,020.70 and 266,914,612.20 is: 400,371,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,272,013.80 : 469,908,020.70 = 266,914,612.20 : x
  2. Step 2: Convert to fraction form
    313,272,013.80/469,908,020.70 = 266,914,612.20/x
  3. Step 3: Cross multiply
    313,272,013.80x = 469,908,020.70 × 266,914,612.20
  4. Step 4: Simplify right side
    313,272,013.80x = 125,425,317,114,810,064
  5. Step 5: Solve for x
    x = 125,425,317,114,810,064/313,272,013.80
  6. Step 6: Final answer
    x = 400,371,918.30

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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.