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Finding the Fourth Proportional to 339,711.40, 509,502.30 and 103,061.80

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Solution

The fourth proportional to 339,711.40, 509,502.30 and 103,061.80 is: 154,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,711.40 : 509,502.30 = 103,061.80 : x
  2. Step 2: Convert to fraction form
    339,711.40/509,502.30 = 103,061.80/x
  3. Step 3: Cross multiply
    339,711.40x = 509,502.30 × 103,061.80
  4. Step 4: Simplify right side
    339,711.40x = 52,510,224,142.14
  5. Step 5: Solve for x
    x = 52,510,224,142.14/339,711.40
  6. Step 6: Final answer
    x = 154,573.04

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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.