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Finding the Fourth Proportional to 366,989.90, 550,352.69 and 127,038.61

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Solution

The fourth proportional to 366,989.90, 550,352.69 and 127,038.61 is: 190,512.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,989.90 : 550,352.69 = 127,038.61 : x
  2. Step 2: Convert to fraction form
    366,989.90/550,352.69 = 127,038.61/x
  3. Step 3: Cross multiply
    366,989.90x = 550,352.69 × 127,038.61
  4. Step 4: Simplify right side
    366,989.90x = 69,916,037,360.40
  5. Step 5: Solve for x
    x = 69,916,037,360.40/366,989.90
  6. Step 6: Final answer
    x = 190,512.16

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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.