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Finding the Fourth Proportional to 292,470.85, 438,721.85 and 92,806.86

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Solution

The fourth proportional to 292,470.85, 438,721.85 and 92,806.86 is: 139,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,470.85 : 438,721.85 = 92,806.86 : x
  2. Step 2: Convert to fraction form
    292,470.85/438,721.85 = 92,806.86/x
  3. Step 3: Cross multiply
    292,470.85x = 438,721.85 × 92,806.86
  4. Step 4: Simplify right side
    292,470.85x = 40,716,397,543.91
  5. Step 5: Solve for x
    x = 40,716,397,543.91/292,470.85
  6. Step 6: Final answer
    x = 139,215.23

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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.