Home / 280,604.33-387,227.68-153,280.43

Finding the Fourth Proportional to 280,604.33, 387,227.68 and 153,280.43

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Solution

The fourth proportional to 280,604.33, 387,227.68 and 153,280.43 is: 211,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,604.33 : 387,227.68 = 153,280.43 : x
  2. Step 2: Convert to fraction form
    280,604.33/387,227.68 = 153,280.43/x
  3. Step 3: Cross multiply
    280,604.33x = 387,227.68 × 153,280.43
  4. Step 4: Simplify right side
    280,604.33x = 59,354,422,978.96
  5. Step 5: Solve for x
    x = 59,354,422,978.96/280,604.33
  6. Step 6: Final answer
    x = 211,523.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.