Home / 280,272.32-386,741.76-159,428.96

Finding the Fourth Proportional to 280,272.32, 386,741.76 and 159,428.96

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Solution

The fourth proportional to 280,272.32, 386,741.76 and 159,428.96 is: 219,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,272.32 : 386,741.76 = 159,428.96 : x
  2. Step 2: Convert to fraction form
    280,272.32/386,741.76 = 159,428.96/x
  3. Step 3: Cross multiply
    280,272.32x = 386,741.76 × 159,428.96
  4. Step 4: Simplify right side
    280,272.32x = 61,657,836,585.37
  5. Step 5: Solve for x
    x = 61,657,836,585.37/280,272.32
  6. Step 6: Final answer
    x = 219,992.60

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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.