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Finding the Fourth Proportional to 273,013.12, 409,520.72 and 83,472.72

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Solution

The fourth proportional to 273,013.12, 409,520.72 and 83,472.72 is: 125,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,013.12 : 409,520.72 = 83,472.72 : x
  2. Step 2: Convert to fraction form
    273,013.12/409,520.72 = 83,472.72/x
  3. Step 3: Cross multiply
    273,013.12x = 409,520.72 × 83,472.72
  4. Step 4: Simplify right side
    273,013.12x = 34,183,808,394.76
  5. Step 5: Solve for x
    x = 34,183,808,394.76/273,013.12
  6. Step 6: Final answer
    x = 125,209.40

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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.