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Finding the Fourth Proportional to 366,927.20, 550,390.80 and 320,271.20

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Solution

The fourth proportional to 366,927.20, 550,390.80 and 320,271.20 is: 480,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,927.20 : 550,390.80 = 320,271.20 : x
  2. Step 2: Convert to fraction form
    366,927.20/550,390.80 = 320,271.20/x
  3. Step 3: Cross multiply
    366,927.20x = 550,390.80 × 320,271.20
  4. Step 4: Simplify right side
    366,927.20x = 176,274,321,984.96
  5. Step 5: Solve for x
    x = 176,274,321,984.96/366,927.20
  6. Step 6: Final answer
    x = 480,406.80

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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.