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Finding the Fourth Proportional to 239,968.68, 359,730.46 and 90,308.22

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Solution

The fourth proportional to 239,968.68, 359,730.46 and 90,308.22 is: 135,378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,968.68 : 359,730.46 = 90,308.22 : x
  2. Step 2: Convert to fraction form
    239,968.68/359,730.46 = 90,308.22/x
  3. Step 3: Cross multiply
    239,968.68x = 359,730.46 × 90,308.22
  4. Step 4: Simplify right side
    239,968.68x = 32,486,617,522.38
  5. Step 5: Solve for x
    x = 32,486,617,522.38/239,968.68
  6. Step 6: Final answer
    x = 135,378.57

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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.