Home / 280,377.18-386,917.86-172,904.22

Finding the Fourth Proportional to 280,377.18, 386,917.86 and 172,904.22

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Solution

The fourth proportional to 280,377.18, 386,917.86 and 172,904.22 is: 238,606.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,377.18 : 386,917.86 = 172,904.22 : x
  2. Step 2: Convert to fraction form
    280,377.18/386,917.86 = 172,904.22/x
  3. Step 3: Cross multiply
    280,377.18x = 386,917.86 × 172,904.22
  4. Step 4: Simplify right side
    280,377.18x = 66,899,730,787.37
  5. Step 5: Solve for x
    x = 66,899,730,787.37/280,377.18
  6. Step 6: Final answer
    x = 238,606.19

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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.