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Finding the Fourth Proportional to 239,907.26, 359,911.64 and 90,148.85

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Solution

The fourth proportional to 239,907.26, 359,911.64 and 90,148.85 is: 135,242.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,907.26 : 359,911.64 = 90,148.85 : x
  2. Step 2: Convert to fraction form
    239,907.26/359,911.64 = 90,148.85/x
  3. Step 3: Cross multiply
    239,907.26x = 359,911.64 × 90,148.85
  4. Step 4: Simplify right side
    239,907.26x = 32,445,620,447.61
  5. Step 5: Solve for x
    x = 32,445,620,447.61/239,907.26
  6. Step 6: Final answer
    x = 135,242.35

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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.