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Finding the Fourth Proportional to 193,479.20, 290,218.80 and 53,237.60

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Solution

The fourth proportional to 193,479.20, 290,218.80 and 53,237.60 is: 79,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,479.20 : 290,218.80 = 53,237.60 : x
  2. Step 2: Convert to fraction form
    193,479.20/290,218.80 = 53,237.60/x
  3. Step 3: Cross multiply
    193,479.20x = 290,218.80 × 53,237.60
  4. Step 4: Simplify right side
    193,479.20x = 15,450,552,386.88
  5. Step 5: Solve for x
    x = 15,450,552,386.88/193,479.20
  6. Step 6: Final answer
    x = 79,856.40

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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.