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Finding the Fourth Proportional to 577,494.40, 865,982.40 and 222,390.40

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Solution

The fourth proportional to 577,494.40, 865,982.40 and 222,390.40 is: 333,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,494.40 : 865,982.40 = 222,390.40 : x
  2. Step 2: Convert to fraction form
    577,494.40/865,982.40 = 222,390.40/x
  3. Step 3: Cross multiply
    577,494.40x = 865,982.40 × 222,390.40
  4. Step 4: Simplify right side
    577,494.40x = 192,586,172,328.96
  5. Step 5: Solve for x
    x = 192,586,172,328.96/577,494.40
  6. Step 6: Final answer
    x = 333,485.78

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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.