Home / 280,235.70-386,324.64-172,734.12

Finding the Fourth Proportional to 280,235.70, 386,324.64 and 172,734.12

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Solution

The fourth proportional to 280,235.70, 386,324.64 and 172,734.12 is: 238,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,235.70 : 386,324.64 = 172,734.12 : x
  2. Step 2: Convert to fraction form
    280,235.70/386,324.64 = 172,734.12/x
  3. Step 3: Cross multiply
    280,235.70x = 386,324.64 × 172,734.12
  4. Step 4: Simplify right side
    280,235.70x = 66,731,446,724.72
  5. Step 5: Solve for x
    x = 66,731,446,724.72/280,235.70
  6. Step 6: Final answer
    x = 238,126.14

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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.