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Finding the Fourth Proportional to 487,263.22, 730,794.39 and 187,640.98

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Solution

The fourth proportional to 487,263.22, 730,794.39 and 187,640.98 is: 281,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,263.22 : 730,794.39 = 187,640.98 : x
  2. Step 2: Convert to fraction form
    487,263.22/730,794.39 = 187,640.98/x
  3. Step 3: Cross multiply
    487,263.22x = 730,794.39 × 187,640.98
  4. Step 4: Simplify right side
    487,263.22x = 137,126,975,518.10
  5. Step 5: Solve for x
    x = 137,126,975,518.10/487,263.22
  6. Step 6: Final answer
    x = 281,422.79

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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.