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Finding the Fourth Proportional to 342,225.60, 513,856.80 and 263,428.80

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Solution

The fourth proportional to 342,225.60, 513,856.80 and 263,428.80 is: 395,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,225.60 : 513,856.80 = 263,428.80 : x
  2. Step 2: Convert to fraction form
    342,225.60/513,856.80 = 263,428.80/x
  3. Step 3: Cross multiply
    342,225.60x = 513,856.80 × 263,428.80
  4. Step 4: Simplify right side
    342,225.60x = 135,364,680,195.84
  5. Step 5: Solve for x
    x = 135,364,680,195.84/342,225.60
  6. Step 6: Final answer
    x = 395,542.24

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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.