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Finding the Fourth Proportional to 330,332.72, 495,531.88 and 105,636.70

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Solution

The fourth proportional to 330,332.72, 495,531.88 and 105,636.70 is: 158,465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,332.72 : 495,531.88 = 105,636.70 : x
  2. Step 2: Convert to fraction form
    330,332.72/495,531.88 = 105,636.70/x
  3. Step 3: Cross multiply
    330,332.72x = 495,531.88 × 105,636.70
  4. Step 4: Simplify right side
    330,332.72x = 52,346,352,548.00
  5. Step 5: Solve for x
    x = 52,346,352,548.00/330,332.72
  6. Step 6: Final answer
    x = 158,465.54

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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.