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Finding the Fourth Proportional to 219,412.60, 329,130.29 and 69,664.61

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Solution

The fourth proportional to 219,412.60, 329,130.29 and 69,664.61 is: 104,500.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,412.60 : 329,130.29 = 69,664.61 : x
  2. Step 2: Convert to fraction form
    219,412.60/329,130.29 = 69,664.61/x
  3. Step 3: Cross multiply
    219,412.60x = 329,130.29 × 69,664.61
  4. Step 4: Simplify right side
    219,412.60x = 22,928,732,045.80
  5. Step 5: Solve for x
    x = 22,928,732,045.80/219,412.60
  6. Step 6: Final answer
    x = 104,500.53

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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.