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Finding the Fourth Proportional to 219,612.30, 329,434.65 and 79,352.70

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Solution

The fourth proportional to 219,612.30, 329,434.65 and 79,352.70 is: 119,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,612.30 : 329,434.65 = 79,352.70 : x
  2. Step 2: Convert to fraction form
    219,612.30/329,434.65 = 79,352.70/x
  3. Step 3: Cross multiply
    219,612.30x = 329,434.65 × 79,352.70
  4. Step 4: Simplify right side
    219,612.30x = 26,141,528,951.06
  5. Step 5: Solve for x
    x = 26,141,528,951.06/219,612.30
  6. Step 6: Final answer
    x = 119,034.90

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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.