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Finding the Fourth Proportional to 366,930.40, 550,395.60 and 156,978.40

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Solution

The fourth proportional to 366,930.40, 550,395.60 and 156,978.40 is: 235,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,930.40 : 550,395.60 = 156,978.40 : x
  2. Step 2: Convert to fraction form
    366,930.40/550,395.60 = 156,978.40/x
  3. Step 3: Cross multiply
    366,930.40x = 550,395.60 × 156,978.40
  4. Step 4: Simplify right side
    366,930.40x = 86,400,220,655.04
  5. Step 5: Solve for x
    x = 86,400,220,655.04/366,930.40
  6. Step 6: Final answer
    x = 235,467.60

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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.