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Finding the Fourth Proportional to 310,638.52, 428,396.88 and 230,266.28

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Solution

The fourth proportional to 310,638.52, 428,396.88 and 230,266.28 is: 317,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,638.52 : 428,396.88 = 230,266.28 : x
  2. Step 2: Convert to fraction form
    310,638.52/428,396.88 = 230,266.28/x
  3. Step 3: Cross multiply
    310,638.52x = 428,396.88 × 230,266.28
  4. Step 4: Simplify right side
    310,638.52x = 98,645,355,921.21
  5. Step 5: Solve for x
    x = 98,645,355,921.21/310,638.52
  6. Step 6: Final answer
    x = 317,556.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.