Home / 280,269.18-386,783.08-159,431.76

Finding the Fourth Proportional to 280,269.18, 386,783.08 and 159,431.76

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Solution

The fourth proportional to 280,269.18, 386,783.08 and 159,431.76 is: 220,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,269.18 : 386,783.08 = 159,431.76 : x
  2. Step 2: Convert to fraction form
    280,269.18/386,783.08 = 159,431.76/x
  3. Step 3: Cross multiply
    280,269.18x = 386,783.08 × 159,431.76
  4. Step 4: Simplify right side
    280,269.18x = 61,665,507,182.62
  5. Step 5: Solve for x
    x = 61,665,507,182.62/280,269.18
  6. Step 6: Final answer
    x = 220,022.43

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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.