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Finding the Fourth Proportional to 272,516.40, 408,774.60 and 260,998.20

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Solution

The fourth proportional to 272,516.40, 408,774.60 and 260,998.20 is: 391,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,516.40 : 408,774.60 = 260,998.20 : x
  2. Step 2: Convert to fraction form
    272,516.40/408,774.60 = 260,998.20/x
  3. Step 3: Cross multiply
    272,516.40x = 408,774.60 × 260,998.20
  4. Step 4: Simplify right side
    272,516.40x = 106,689,434,805.72
  5. Step 5: Solve for x
    x = 106,689,434,805.72/272,516.40
  6. Step 6: Final answer
    x = 391,497.30

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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.