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Finding the Fourth Proportional to 262,303.20, 393,001.20 and 121,773.60

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Solution

The fourth proportional to 262,303.20, 393,001.20 and 121,773.60 is: 182,449.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,303.20 : 393,001.20 = 121,773.60 : x
  2. Step 2: Convert to fraction form
    262,303.20/393,001.20 = 121,773.60/x
  3. Step 3: Cross multiply
    262,303.20x = 393,001.20 × 121,773.60
  4. Step 4: Simplify right side
    262,303.20x = 47,857,170,928.32
  5. Step 5: Solve for x
    x = 47,857,170,928.32/262,303.20
  6. Step 6: Final answer
    x = 182,449.82

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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.