Home / 280,077.08-386,396.34-172,460.48

Finding the Fourth Proportional to 280,077.08, 386,396.34 and 172,460.48

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Solution

The fourth proportional to 280,077.08, 386,396.34 and 172,460.48 is: 237,927.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,077.08 : 386,396.34 = 172,460.48 : x
  2. Step 2: Convert to fraction form
    280,077.08/386,396.34 = 172,460.48/x
  3. Step 3: Cross multiply
    280,077.08x = 386,396.34 × 172,460.48
  4. Step 4: Simplify right side
    280,077.08x = 66,638,098,266.64
  5. Step 5: Solve for x
    x = 66,638,098,266.64/280,077.08
  6. Step 6: Final answer
    x = 237,927.71

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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.