Home / 280,076.08-386,394.96-172,459.48

Finding the Fourth Proportional to 280,076.08, 386,394.96 and 172,459.48

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Solution

The fourth proportional to 280,076.08, 386,394.96 and 172,459.48 is: 237,926.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,076.08 : 386,394.96 = 172,459.48 : x
  2. Step 2: Convert to fraction form
    280,076.08/386,394.96 = 172,459.48/x
  3. Step 3: Cross multiply
    280,076.08x = 386,394.96 × 172,459.48
  4. Step 4: Simplify right side
    280,076.08x = 66,637,473,876.22
  5. Step 5: Solve for x
    x = 66,637,473,876.22/280,076.08
  6. Step 6: Final answer
    x = 237,926.33

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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.