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Finding the Fourth Proportional to 275,856.80, 413,211.12 and 266,339.84

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Solution

The fourth proportional to 275,856.80, 413,211.12 and 266,339.84 is: 398,955.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,856.80 : 413,211.12 = 266,339.84 : x
  2. Step 2: Convert to fraction form
    275,856.80/413,211.12 = 266,339.84/x
  3. Step 3: Cross multiply
    275,856.80x = 413,211.12 × 266,339.84
  4. Step 4: Simplify right side
    275,856.80x = 110,054,583,587.02
  5. Step 5: Solve for x
    x = 110,054,583,587.02/275,856.80
  6. Step 6: Final answer
    x = 398,955.49

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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.