Home / 287,158.26-396,278.37-159,831.12

Finding the Fourth Proportional to 287,158.26, 396,278.37 and 159,831.12

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Solution

The fourth proportional to 287,158.26, 396,278.37 and 159,831.12 is: 220,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,158.26 : 396,278.37 = 159,831.12 : x
  2. Step 2: Convert to fraction form
    287,158.26/396,278.37 = 159,831.12/x
  3. Step 3: Cross multiply
    287,158.26x = 396,278.37 × 159,831.12
  4. Step 4: Simplify right side
    287,158.26x = 63,337,615,708.87
  5. Step 5: Solve for x
    x = 63,337,615,708.87/287,158.26
  6. Step 6: Final answer
    x = 220,566.93

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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.