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Finding the Fourth Proportional to 274,510.10, 411,437.10 and 141,321.80

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Solution

The fourth proportional to 274,510.10, 411,437.10 and 141,321.80 is: 211,813.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,510.10 : 411,437.10 = 141,321.80 : x
  2. Step 2: Convert to fraction form
    274,510.10/411,437.10 = 141,321.80/x
  3. Step 3: Cross multiply
    274,510.10x = 411,437.10 × 141,321.80
  4. Step 4: Simplify right side
    274,510.10x = 58,145,031,558.78
  5. Step 5: Solve for x
    x = 58,145,031,558.78/274,510.10
  6. Step 6: Final answer
    x = 211,813.82

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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.