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Finding the Fourth Proportional to 292,561.52, 438,859.29 and 82,215.86

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Solution

The fourth proportional to 292,561.52, 438,859.29 and 82,215.86 is: 123,328.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,561.52 : 438,859.29 = 82,215.86 : x
  2. Step 2: Convert to fraction form
    292,561.52/438,859.29 = 82,215.86/x
  3. Step 3: Cross multiply
    292,561.52x = 438,859.29 × 82,215.86
  4. Step 4: Simplify right side
    292,561.52x = 36,081,193,946.34
  5. Step 5: Solve for x
    x = 36,081,193,946.34/292,561.52
  6. Step 6: Final answer
    x = 123,328.57

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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.