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Finding the Fourth Proportional to 485,006.39, 669,309.49 and 264,242.58

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Solution

The fourth proportional to 485,006.39, 669,309.49 and 264,242.58 is: 364,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,006.39 : 669,309.49 = 264,242.58 : x
  2. Step 2: Convert to fraction form
    485,006.39/669,309.49 = 264,242.58/x
  3. Step 3: Cross multiply
    485,006.39x = 669,309.49 × 264,242.58
  4. Step 4: Simplify right side
    485,006.39x = 176,860,066,456.08
  5. Step 5: Solve for x
    x = 176,860,066,456.08/485,006.39
  6. Step 6: Final answer
    x = 364,655.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.