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Finding the Fourth Proportional to 367,639.90, 551,459.85 and 330,315.10

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Solution

The fourth proportional to 367,639.90, 551,459.85 and 330,315.10 is: 495,472.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,639.90 : 551,459.85 = 330,315.10 : x
  2. Step 2: Convert to fraction form
    367,639.90/551,459.85 = 330,315.10/x
  3. Step 3: Cross multiply
    367,639.90x = 551,459.85 × 330,315.10
  4. Step 4: Simplify right side
    367,639.90x = 182,155,515,498.74
  5. Step 5: Solve for x
    x = 182,155,515,498.74/367,639.90
  6. Step 6: Final answer
    x = 495,472.65

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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.