Home / 278,865,139.55-417,489,937.46-210,067,684.78

Finding the Fourth Proportional to 278,865,139.55, 417,489,937.46 and 210,067,684.78

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Solution

The fourth proportional to 278,865,139.55, 417,489,937.46 and 210,067,684.78 is: 314,493,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,865,139.55 : 417,489,937.46 = 210,067,684.78 : x
  2. Step 2: Convert to fraction form
    278,865,139.55/417,489,937.46 = 210,067,684.78/x
  3. Step 3: Cross multiply
    278,865,139.55x = 417,489,937.46 × 210,067,684.78
  4. Step 4: Simplify right side
    278,865,139.55x = 87,701,144,581,816,752
  5. Step 5: Solve for x
    x = 87,701,144,581,816,752/278,865,139.55
  6. Step 6: Final answer
    x = 314,493,036.75

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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.