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Finding the Fourth Proportional to 342,170.40, 512,672.40 and 292,015.20

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Solution

The fourth proportional to 342,170.40, 512,672.40 and 292,015.20 is: 437,525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,170.40 : 512,672.40 = 292,015.20 : x
  2. Step 2: Convert to fraction form
    342,170.40/512,672.40 = 292,015.20/x
  3. Step 3: Cross multiply
    342,170.40x = 512,672.40 × 292,015.20
  4. Step 4: Simplify right side
    342,170.40x = 149,708,133,420.48
  5. Step 5: Solve for x
    x = 149,708,133,420.48/342,170.40
  6. Step 6: Final answer
    x = 437,525.09

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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.