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Finding the Fourth Proportional to 248,927.20, 373,390.80 and 80,447.20

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Solution

The fourth proportional to 248,927.20, 373,390.80 and 80,447.20 is: 120,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,927.20 : 373,390.80 = 80,447.20 : x
  2. Step 2: Convert to fraction form
    248,927.20/373,390.80 = 80,447.20/x
  3. Step 3: Cross multiply
    248,927.20x = 373,390.80 × 80,447.20
  4. Step 4: Simplify right side
    248,927.20x = 30,038,244,365.76
  5. Step 5: Solve for x
    x = 30,038,244,365.76/248,927.20
  6. Step 6: Final answer
    x = 120,670.80

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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.