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Finding the Fourth Proportional to 664,912.90, 997,065.89 and 238,283.88

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Solution

The fourth proportional to 664,912.90, 997,065.89 and 238,283.88 is: 357,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,912.90 : 997,065.89 = 238,283.88 : x
  2. Step 2: Convert to fraction form
    664,912.90/997,065.89 = 238,283.88/x
  3. Step 3: Cross multiply
    664,912.90x = 997,065.89 × 238,283.88
  4. Step 4: Simplify right side
    664,912.90x = 237,584,724,848.00
  5. Step 5: Solve for x
    x = 237,584,724,848.00/664,912.90
  6. Step 6: Final answer
    x = 357,317.06

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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.