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Finding the Fourth Proportional to 393,087.30, 588,270.15 and 235,428.90

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Solution

The fourth proportional to 393,087.30, 588,270.15 and 235,428.90 is: 352,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,087.30 : 588,270.15 = 235,428.90 : x
  2. Step 2: Convert to fraction form
    393,087.30/588,270.15 = 235,428.90/x
  3. Step 3: Cross multiply
    393,087.30x = 588,270.15 × 235,428.90
  4. Step 4: Simplify right side
    393,087.30x = 138,495,794,317.34
  5. Step 5: Solve for x
    x = 138,495,794,317.34/393,087.30
  6. Step 6: Final answer
    x = 352,328.34

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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.