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Finding the Fourth Proportional to 219,215.40, 328,640.85 and 92,952.60

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Solution

The fourth proportional to 219,215.40, 328,640.85 and 92,952.60 is: 139,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,215.40 : 328,640.85 = 92,952.60 : x
  2. Step 2: Convert to fraction form
    219,215.40/328,640.85 = 92,952.60/x
  3. Step 3: Cross multiply
    219,215.40x = 328,640.85 × 92,952.60
  4. Step 4: Simplify right side
    219,215.40x = 30,548,021,473.71
  5. Step 5: Solve for x
    x = 30,548,021,473.71/219,215.40
  6. Step 6: Final answer
    x = 139,351.62

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1.5x scale

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.