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Finding the Fourth Proportional to 272,923.80, 409,385.70 and 253,240.80

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Solution

The fourth proportional to 272,923.80, 409,385.70 and 253,240.80 is: 379,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,923.80 : 409,385.70 = 253,240.80 : x
  2. Step 2: Convert to fraction form
    272,923.80/409,385.70 = 253,240.80/x
  3. Step 3: Cross multiply
    272,923.80x = 409,385.70 × 253,240.80
  4. Step 4: Simplify right side
    272,923.80x = 103,673,162,176.56
  5. Step 5: Solve for x
    x = 103,673,162,176.56/272,923.80
  6. Step 6: Final answer
    x = 379,861.20

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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.