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Finding the Fourth Proportional to 487,397.10, 731,375.10 and 262,756.56

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Solution

The fourth proportional to 487,397.10, 731,375.10 and 262,756.56 is: 394,285.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,397.10 : 731,375.10 = 262,756.56 : x
  2. Step 2: Convert to fraction form
    487,397.10/731,375.10 = 262,756.56/x
  3. Step 3: Cross multiply
    487,397.10x = 731,375.10 × 262,756.56
  4. Step 4: Simplify right side
    487,397.10x = 192,173,605,345.66
  5. Step 5: Solve for x
    x = 192,173,605,345.66/487,397.10
  6. Step 6: Final answer
    x = 394,285.49

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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.