Home / 278,022,400.30-417,033,600.45-213,452,318.80

Finding the Fourth Proportional to 278,022,400.30, 417,033,600.45 and 213,452,318.80

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Solution

The fourth proportional to 278,022,400.30, 417,033,600.45 and 213,452,318.80 is: 320,178,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,022,400.30 : 417,033,600.45 = 213,452,318.80 : x
  2. Step 2: Convert to fraction form
    278,022,400.30/417,033,600.45 = 213,452,318.80/x
  3. Step 3: Cross multiply
    278,022,400.30x = 417,033,600.45 × 213,452,318.80
  4. Step 4: Simplify right side
    278,022,400.30x = 89,016,789,033,565,232
  5. Step 5: Solve for x
    x = 89,016,789,033,565,232/278,022,400.30
  6. Step 6: Final answer
    x = 320,178,478.20

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1.5x scale

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.