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Finding the Fourth Proportional to 551,495.20, 827,267.10 and 311,605.60

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Solution

The fourth proportional to 551,495.20, 827,267.10 and 311,605.60 is: 467,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,495.20 : 827,267.10 = 311,605.60 : x
  2. Step 2: Convert to fraction form
    551,495.20/827,267.10 = 311,605.60/x
  3. Step 3: Cross multiply
    551,495.20x = 827,267.10 × 311,605.60
  4. Step 4: Simplify right side
    551,495.20x = 257,781,061,055.76
  5. Step 5: Solve for x
    x = 257,781,061,055.76/551,495.20
  6. Step 6: Final answer
    x = 467,422.13

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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.