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Finding the Fourth Proportional to 219,894.30, 329,841.45 and 143,786.70

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Solution

The fourth proportional to 219,894.30, 329,841.45 and 143,786.70 is: 215,680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,894.30 : 329,841.45 = 143,786.70 : x
  2. Step 2: Convert to fraction form
    219,894.30/329,841.45 = 143,786.70/x
  3. Step 3: Cross multiply
    219,894.30x = 329,841.45 × 143,786.70
  4. Step 4: Simplify right side
    219,894.30x = 47,426,813,618.72
  5. Step 5: Solve for x
    x = 47,426,813,618.72/219,894.30
  6. Step 6: Final answer
    x = 215,680.05

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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.