Home / 280,186.10-386,686.60-171,354.10

Finding the Fourth Proportional to 280,186.10, 386,686.60 and 171,354.10

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Solution

The fourth proportional to 280,186.10, 386,686.60 and 171,354.10 is: 236,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,186.10 : 386,686.60 = 171,354.10 : x
  2. Step 2: Convert to fraction form
    280,186.10/386,686.60 = 171,354.10/x
  3. Step 3: Cross multiply
    280,186.10x = 386,686.60 × 171,354.10
  4. Step 4: Simplify right side
    280,186.10x = 66,260,334,325.06
  5. Step 5: Solve for x
    x = 66,260,334,325.06/280,186.10
  6. Step 6: Final answer
    x = 236,486.87

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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.