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Finding the Fourth Proportional to 273,313.40, 409,278.90 and 218,017.40

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Solution

The fourth proportional to 273,313.40, 409,278.90 and 218,017.40 is: 326,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,313.40 : 409,278.90 = 218,017.40 : x
  2. Step 2: Convert to fraction form
    273,313.40/409,278.90 = 218,017.40/x
  3. Step 3: Cross multiply
    273,313.40x = 409,278.90 × 218,017.40
  4. Step 4: Simplify right side
    273,313.40x = 89,229,921,652.86
  5. Step 5: Solve for x
    x = 89,229,921,652.86/273,313.40
  6. Step 6: Final answer
    x = 326,474.74

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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.