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Finding the Fourth Proportional to 340,711.80, 510,083.55 and 330,870.30

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Solution

The fourth proportional to 340,711.80, 510,083.55 and 330,870.30 is: 495,349.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,711.80 : 510,083.55 = 330,870.30 : x
  2. Step 2: Convert to fraction form
    340,711.80/510,083.55 = 330,870.30/x
  3. Step 3: Cross multiply
    340,711.80x = 510,083.55 × 330,870.30
  4. Step 4: Simplify right side
    340,711.80x = 168,771,497,213.57
  5. Step 5: Solve for x
    x = 168,771,497,213.57/340,711.80
  6. Step 6: Final answer
    x = 495,349.73

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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.