Home / 278,463.96-417,629.04-128,560.24

Finding the Fourth Proportional to 278,463.96, 417,629.04 and 128,560.24

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Solution

The fourth proportional to 278,463.96, 417,629.04 and 128,560.24 is: 192,809.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,463.96 : 417,629.04 = 128,560.24 : x
  2. Step 2: Convert to fraction form
    278,463.96/417,629.04 = 128,560.24/x
  3. Step 3: Cross multiply
    278,463.96x = 417,629.04 × 128,560.24
  4. Step 4: Simplify right side
    278,463.96x = 53,690,489,613.37
  5. Step 5: Solve for x
    x = 53,690,489,613.37/278,463.96
  6. Step 6: Final answer
    x = 192,809.47

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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.