Home / 258,891,790.80-388,337,686.20-67,415,566.80

Finding the Fourth Proportional to 258,891,790.80, 388,337,686.20 and 67,415,566.80

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Solution

The fourth proportional to 258,891,790.80, 388,337,686.20 and 67,415,566.80 is: 101,123,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,891,790.80 : 388,337,686.20 = 67,415,566.80 : x
  2. Step 2: Convert to fraction form
    258,891,790.80/388,337,686.20 = 67,415,566.80/x
  3. Step 3: Cross multiply
    258,891,790.80x = 388,337,686.20 × 67,415,566.80
  4. Step 4: Simplify right side
    258,891,790.80x = 26,180,005,224,973,536
  5. Step 5: Solve for x
    x = 26,180,005,224,973,536/258,891,790.80
  6. Step 6: Final answer
    x = 101,123,350.20

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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.