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Finding the Fourth Proportional to 342,415.60, 513,710.88 and 131,997.04

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Solution

The fourth proportional to 342,415.60, 513,710.88 and 131,997.04 is: 198,029.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,415.60 : 513,710.88 = 131,997.04 : x
  2. Step 2: Convert to fraction form
    342,415.60/513,710.88 = 131,997.04/x
  3. Step 3: Cross multiply
    342,415.60x = 513,710.88 × 131,997.04
  4. Step 4: Simplify right side
    342,415.60x = 67,808,315,575.80
  5. Step 5: Solve for x
    x = 67,808,315,575.80/342,415.60
  6. Step 6: Final answer
    x = 198,029.28

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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.