Home / 321,656,911.20-482,485,366.80-268,087,658.40

Finding the Fourth Proportional to 321,656,911.20, 482,485,366.80 and 268,087,658.40

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Solution

The fourth proportional to 321,656,911.20, 482,485,366.80 and 268,087,658.40 is: 402,131,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,656,911.20 : 482,485,366.80 = 268,087,658.40 : x
  2. Step 2: Convert to fraction form
    321,656,911.20/482,485,366.80 = 268,087,658.40/x
  3. Step 3: Cross multiply
    321,656,911.20x = 482,485,366.80 × 268,087,658.40
  4. Step 4: Simplify right side
    321,656,911.20x = 129,348,372,197,677,104
  5. Step 5: Solve for x
    x = 129,348,372,197,677,104/321,656,911.20
  6. Step 6: Final answer
    x = 402,131,487.60

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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.