Home / 280,624.22-387,261.78-159,765.50

Finding the Fourth Proportional to 280,624.22, 387,261.78 and 159,765.50

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Solution

The fourth proportional to 280,624.22, 387,261.78 and 159,765.50 is: 220,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,624.22 : 387,261.78 = 159,765.50 : x
  2. Step 2: Convert to fraction form
    280,624.22/387,261.78 = 159,765.50/x
  3. Step 3: Cross multiply
    280,624.22x = 387,261.78 × 159,765.50
  4. Step 4: Simplify right side
    280,624.22x = 61,871,069,976.28
  5. Step 5: Solve for x
    x = 61,871,069,976.28/280,624.22
  6. Step 6: Final answer
    x = 220,476.59

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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.