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Finding the Fourth Proportional to 243,990.27, 366,002.51 and 75,488.40

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Solution

The fourth proportional to 243,990.27, 366,002.51 and 75,488.40 is: 113,237.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,990.27 : 366,002.51 = 75,488.40 : x
  2. Step 2: Convert to fraction form
    243,990.27/366,002.51 = 75,488.40/x
  3. Step 3: Cross multiply
    243,990.27x = 366,002.51 × 75,488.40
  4. Step 4: Simplify right side
    243,990.27x = 27,628,943,498.44
  5. Step 5: Solve for x
    x = 27,628,943,498.44/243,990.27
  6. Step 6: Final answer
    x = 113,237.89

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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.