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Finding the Fourth Proportional to 342,140.20, 513,501.90 and 152,891.80

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Solution

The fourth proportional to 342,140.20, 513,501.90 and 152,891.80 is: 229,468.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,140.20 : 513,501.90 = 152,891.80 : x
  2. Step 2: Convert to fraction form
    342,140.20/513,501.90 = 152,891.80/x
  3. Step 3: Cross multiply
    342,140.20x = 513,501.90 × 152,891.80
  4. Step 4: Simplify right side
    342,140.20x = 78,510,229,794.42
  5. Step 5: Solve for x
    x = 78,510,229,794.42/342,140.20
  6. Step 6: Final answer
    x = 229,468.01

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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.