Home / 343,827.40-515,741.10-217,856.20

Finding the Fourth Proportional to 343,827.40, 515,741.10 and 217,856.20

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Solution

The fourth proportional to 343,827.40, 515,741.10 and 217,856.20 is: 326,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,827.40 : 515,741.10 = 217,856.20 : x
  2. Step 2: Convert to fraction form
    343,827.40/515,741.10 = 217,856.20/x
  3. Step 3: Cross multiply
    343,827.40x = 515,741.10 × 217,856.20
  4. Step 4: Simplify right side
    343,827.40x = 112,357,396,229.82
  5. Step 5: Solve for x
    x = 112,357,396,229.82/343,827.40
  6. Step 6: Final answer
    x = 326,784.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.