Home / 431,923.20-647,884.80-207,245.40

Finding the Fourth Proportional to 431,923.20, 647,884.80 and 207,245.40

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Solution

The fourth proportional to 431,923.20, 647,884.80 and 207,245.40 is: 310,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,923.20 : 647,884.80 = 207,245.40 : x
  2. Step 2: Convert to fraction form
    431,923.20/647,884.80 = 207,245.40/x
  3. Step 3: Cross multiply
    431,923.20x = 647,884.80 × 207,245.40
  4. Step 4: Simplify right side
    431,923.20x = 134,271,144,529.92
  5. Step 5: Solve for x
    x = 134,271,144,529.92/431,923.20
  6. Step 6: Final answer
    x = 310,868.10

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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.