Home / 280,346.96-386,987.28-167,178.08

Finding the Fourth Proportional to 280,346.96, 386,987.28 and 167,178.08

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Solution

The fourth proportional to 280,346.96, 386,987.28 and 167,178.08 is: 230,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,346.96 : 386,987.28 = 167,178.08 : x
  2. Step 2: Convert to fraction form
    280,346.96/386,987.28 = 167,178.08/x
  3. Step 3: Cross multiply
    280,346.96x = 386,987.28 × 167,178.08
  4. Step 4: Simplify right side
    280,346.96x = 64,695,790,454.82
  5. Step 5: Solve for x
    x = 64,695,790,454.82/280,346.96
  6. Step 6: Final answer
    x = 230,770.44

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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.