Home / 288,987.35-398,788.38-159,923.57

Finding the Fourth Proportional to 288,987.35, 398,788.38 and 159,923.57

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Solution

The fourth proportional to 288,987.35, 398,788.38 and 159,923.57 is: 220,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,987.35 : 398,788.38 = 159,923.57 : x
  2. Step 2: Convert to fraction form
    288,987.35/398,788.38 = 159,923.57/x
  3. Step 3: Cross multiply
    288,987.35x = 398,788.38 × 159,923.57
  4. Step 4: Simplify right side
    288,987.35x = 63,775,659,410.17
  5. Step 5: Solve for x
    x = 63,775,659,410.17/288,987.35
  6. Step 6: Final answer
    x = 220,686.69

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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.