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Finding the Fourth Proportional to 343,258.40, 514,580.40 and 132,826.40

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Solution

The fourth proportional to 343,258.40, 514,580.40 and 132,826.40 is: 199,120.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,258.40 : 514,580.40 = 132,826.40 : x
  2. Step 2: Convert to fraction form
    343,258.40/514,580.40 = 132,826.40/x
  3. Step 3: Cross multiply
    343,258.40x = 514,580.40 × 132,826.40
  4. Step 4: Simplify right side
    343,258.40x = 68,349,862,042.56
  5. Step 5: Solve for x
    x = 68,349,862,042.56/343,258.40
  6. Step 6: Final answer
    x = 199,120.73

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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.