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Finding the Fourth Proportional to 278,233.20, 417,349.80 and 259,570.80

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Solution

The fourth proportional to 278,233.20, 417,349.80 and 259,570.80 is: 389,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,233.20 : 417,349.80 = 259,570.80 : x
  2. Step 2: Convert to fraction form
    278,233.20/417,349.80 = 259,570.80/x
  3. Step 3: Cross multiply
    278,233.20x = 417,349.80 × 259,570.80
  4. Step 4: Simplify right side
    278,233.20x = 108,331,821,465.84
  5. Step 5: Solve for x
    x = 108,331,821,465.84/278,233.20
  6. Step 6: Final answer
    x = 389,356.20

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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.