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Finding the Fourth Proportional to 366,930.90, 550,396.35 and 156,978.90

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Solution

The fourth proportional to 366,930.90, 550,396.35 and 156,978.90 is: 235,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,930.90 : 550,396.35 = 156,978.90 : x
  2. Step 2: Convert to fraction form
    366,930.90/550,396.35 = 156,978.90/x
  3. Step 3: Cross multiply
    366,930.90x = 550,396.35 × 156,978.90
  4. Step 4: Simplify right side
    366,930.90x = 86,400,613,587.02
  5. Step 5: Solve for x
    x = 86,400,613,587.02/366,930.90
  6. Step 6: Final answer
    x = 235,468.35

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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.