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Finding the Fourth Proportional to 348,039.60, 522,059.40 and 126,394.80

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Solution

The fourth proportional to 348,039.60, 522,059.40 and 126,394.80 is: 189,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,039.60 : 522,059.40 = 126,394.80 : x
  2. Step 2: Convert to fraction form
    348,039.60/522,059.40 = 126,394.80/x
  3. Step 3: Cross multiply
    348,039.60x = 522,059.40 × 126,394.80
  4. Step 4: Simplify right side
    348,039.60x = 65,985,593,451.12
  5. Step 5: Solve for x
    x = 65,985,593,451.12/348,039.60
  6. Step 6: Final answer
    x = 189,592.20

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1.5x scale

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.