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Finding the Fourth Proportional to 619,473.60, 928,991.70 and 220,127.40

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Solution

The fourth proportional to 619,473.60, 928,991.70 and 220,127.40 is: 330,113.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,473.60 : 928,991.70 = 220,127.40 : x
  2. Step 2: Convert to fraction form
    619,473.60/928,991.70 = 220,127.40/x
  3. Step 3: Cross multiply
    619,473.60x = 928,991.70 × 220,127.40
  4. Step 4: Simplify right side
    619,473.60x = 204,496,527,542.58
  5. Step 5: Solve for x
    x = 204,496,527,542.58/619,473.60
  6. Step 6: Final answer
    x = 330,113.39

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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.