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Finding the Fourth Proportional to 652,157.40, 978,284.70 and 231,378.60

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Solution

The fourth proportional to 652,157.40, 978,284.70 and 231,378.60 is: 347,085.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,157.40 : 978,284.70 = 231,378.60 : x
  2. Step 2: Convert to fraction form
    652,157.40/978,284.70 = 231,378.60/x
  3. Step 3: Cross multiply
    652,157.40x = 978,284.70 × 231,378.60
  4. Step 4: Simplify right side
    652,157.40x = 226,354,144,287.42
  5. Step 5: Solve for x
    x = 226,354,144,287.42/652,157.40
  6. Step 6: Final answer
    x = 347,085.14

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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.