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Finding the Fourth Proportional to 179,389.60, 268,987.20 and 74,219.20

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Solution

The fourth proportional to 179,389.60, 268,987.20 and 74,219.20 is: 111,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,389.60 : 268,987.20 = 74,219.20 : x
  2. Step 2: Convert to fraction form
    179,389.60/268,987.20 = 74,219.20/x
  3. Step 3: Cross multiply
    179,389.60x = 268,987.20 × 74,219.20
  4. Step 4: Simplify right side
    179,389.60x = 19,964,014,794.24
  5. Step 5: Solve for x
    x = 19,964,014,794.24/179,389.60
  6. Step 6: Final answer
    x = 111,288.59

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1.5x scale

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.