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Finding the Fourth Proportional to 375,431.60, 563,309.40 and 217,794.80

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Solution

The fourth proportional to 375,431.60, 563,309.40 and 217,794.80 is: 326,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,431.60 : 563,309.40 = 217,794.80 : x
  2. Step 2: Convert to fraction form
    375,431.60/563,309.40 = 217,794.80/x
  3. Step 3: Cross multiply
    375,431.60x = 563,309.40 × 217,794.80
  4. Step 4: Simplify right side
    375,431.60x = 122,685,858,111.12
  5. Step 5: Solve for x
    x = 122,685,858,111.12/375,431.60
  6. Step 6: Final answer
    x = 326,786.18

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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.