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Finding the Fourth Proportional to 292,741.92, 439,142.16 and 79,513.20

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Solution

The fourth proportional to 292,741.92, 439,142.16 and 79,513.20 is: 119,277.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,741.92 : 439,142.16 = 79,513.20 : x
  2. Step 2: Convert to fraction form
    292,741.92/439,142.16 = 79,513.20/x
  3. Step 3: Cross multiply
    292,741.92x = 439,142.16 × 79,513.20
  4. Step 4: Simplify right side
    292,741.92x = 34,917,598,396.51
  5. Step 5: Solve for x
    x = 34,917,598,396.51/292,741.92
  6. Step 6: Final answer
    x = 119,277.75

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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.