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Finding the Fourth Proportional to 367,931.80, 551,460.30 and 330,315.40

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Solution

The fourth proportional to 367,931.80, 551,460.30 and 330,315.40 is: 495,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,931.80 : 551,460.30 = 330,315.40 : x
  2. Step 2: Convert to fraction form
    367,931.80/551,460.30 = 330,315.40/x
  3. Step 3: Cross multiply
    367,931.80x = 551,460.30 × 330,315.40
  4. Step 4: Simplify right side
    367,931.80x = 182,155,829,578.62
  5. Step 5: Solve for x
    x = 182,155,829,578.62/367,931.80
  6. Step 6: Final answer
    x = 495,080.42

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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.