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Finding the Fourth Proportional to 917,004.90, 1,375,568.10 and 243,076.80

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Solution

The fourth proportional to 917,004.90, 1,375,568.10 and 243,076.80 is: 364,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,004.90 : 1,375,568.10 = 243,076.80 : x
  2. Step 2: Convert to fraction form
    917,004.90/1,375,568.10 = 243,076.80/x
  3. Step 3: Cross multiply
    917,004.90x = 1,375,568.10 × 243,076.80
  4. Step 4: Simplify right side
    917,004.90x = 334,368,691,930.08
  5. Step 5: Solve for x
    x = 334,368,691,930.08/917,004.90
  6. Step 6: Final answer
    x = 364,631.30

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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.