Home / 280,860.34-387,589.86-159,999.84

Finding the Fourth Proportional to 280,860.34, 387,589.86 and 159,999.84

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Solution

The fourth proportional to 280,860.34, 387,589.86 and 159,999.84 is: 220,801.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,860.34 : 387,589.86 = 159,999.84 : x
  2. Step 2: Convert to fraction form
    280,860.34/387,589.86 = 159,999.84/x
  3. Step 3: Cross multiply
    280,860.34x = 387,589.86 × 159,999.84
  4. Step 4: Simplify right side
    280,860.34x = 62,014,315,585.62
  5. Step 5: Solve for x
    x = 62,014,315,585.62/280,860.34
  6. Step 6: Final answer
    x = 220,801.26

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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.