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Finding the Fourth Proportional to 292,354.17, 438,559.89 and 121,540.56

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Solution

The fourth proportional to 292,354.17, 438,559.89 and 121,540.56 is: 182,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,354.17 : 438,559.89 = 121,540.56 : x
  2. Step 2: Convert to fraction form
    292,354.17/438,559.89 = 121,540.56/x
  3. Step 3: Cross multiply
    292,354.17x = 438,559.89 × 121,540.56
  4. Step 4: Simplify right side
    292,354.17x = 53,302,814,624.14
  5. Step 5: Solve for x
    x = 53,302,814,624.14/292,354.17
  6. Step 6: Final answer
    x = 182,322.74

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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.