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Finding the Fourth Proportional to 652,155.40, 978,405.90 and 231,387.40

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Solution

The fourth proportional to 652,155.40, 978,405.90 and 231,387.40 is: 347,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,155.40 : 978,405.90 = 231,387.40 : x
  2. Step 2: Convert to fraction form
    652,155.40/978,405.90 = 231,387.40/x
  3. Step 3: Cross multiply
    652,155.40x = 978,405.90 × 231,387.40
  4. Step 4: Simplify right side
    652,155.40x = 226,390,797,345.66
  5. Step 5: Solve for x
    x = 226,390,797,345.66/652,155.40
  6. Step 6: Final answer
    x = 347,142.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.