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Finding the Fourth Proportional to 219,154.92, 328,770 and 69,392.76

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Solution

The fourth proportional to 219,154.92, 328,770 and 69,392.76 is: 104,101.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,154.92 : 328,770 = 69,392.76 : x
  2. Step 2: Convert to fraction form
    219,154.92/328,770 = 69,392.76/x
  3. Step 3: Cross multiply
    219,154.92x = 328,770 × 69,392.76
  4. Step 4: Simplify right side
    219,154.92x = 22,814,257,705.20
  5. Step 5: Solve for x
    x = 22,814,257,705.20/219,154.92
  6. Step 6: Final answer
    x = 104,101.05

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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.