Home / 280,040.23-386,478.48-159,219.43

Finding the Fourth Proportional to 280,040.23, 386,478.48 and 159,219.43

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Solution

The fourth proportional to 280,040.23, 386,478.48 and 159,219.43 is: 219,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,040.23 : 386,478.48 = 159,219.43 : x
  2. Step 2: Convert to fraction form
    280,040.23/386,478.48 = 159,219.43/x
  3. Step 3: Cross multiply
    280,040.23x = 386,478.48 × 159,219.43
  4. Step 4: Simplify right side
    280,040.23x = 61,534,883,292.87
  5. Step 5: Solve for x
    x = 61,534,883,292.87/280,040.23
  6. Step 6: Final answer
    x = 219,735.87

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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.