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Finding the Fourth Proportional to 292,015.42, 402,944.66 and 171,129.04

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Solution

The fourth proportional to 292,015.42, 402,944.66 and 171,129.04 is: 236,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,015.42 : 402,944.66 = 171,129.04 : x
  2. Step 2: Convert to fraction form
    292,015.42/402,944.66 = 171,129.04/x
  3. Step 3: Cross multiply
    292,015.42x = 402,944.66 × 171,129.04
  4. Step 4: Simplify right side
    292,015.42x = 68,955,532,838.93
  5. Step 5: Solve for x
    x = 68,955,532,838.93/292,015.42
  6. Step 6: Final answer
    x = 236,136.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.