Home / 431,348,244.80-647,022,367.20-239,872,020.80

Finding the Fourth Proportional to 431,348,244.80, 647,022,367.20 and 239,872,020.80

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Solution

The fourth proportional to 431,348,244.80, 647,022,367.20 and 239,872,020.80 is: 359,808,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,348,244.80 : 647,022,367.20 = 239,872,020.80 : x
  2. Step 2: Convert to fraction form
    431,348,244.80/647,022,367.20 = 239,872,020.80/x
  3. Step 3: Cross multiply
    431,348,244.80x = 647,022,367.20 × 239,872,020.80
  4. Step 4: Simplify right side
    431,348,244.80x = 155,202,562,723,063,648
  5. Step 5: Solve for x
    x = 155,202,562,723,063,648/431,348,244.80
  6. Step 6: Final answer
    x = 359,808,031.20

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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.