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Finding the Fourth Proportional to 342,025.20, 513,037.80 and 105,440.40

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Solution

The fourth proportional to 342,025.20, 513,037.80 and 105,440.40 is: 158,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,025.20 : 513,037.80 = 105,440.40 : x
  2. Step 2: Convert to fraction form
    342,025.20/513,037.80 = 105,440.40/x
  3. Step 3: Cross multiply
    342,025.20x = 513,037.80 × 105,440.40
  4. Step 4: Simplify right side
    342,025.20x = 54,094,910,847.12
  5. Step 5: Solve for x
    x = 54,094,910,847.12/342,025.20
  6. Step 6: Final answer
    x = 158,160.60

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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.