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Finding the Fourth Proportional to 248,624.96, 343,168.80 and 153,147.20

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Solution

The fourth proportional to 248,624.96, 343,168.80 and 153,147.20 is: 211,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,624.96 : 343,168.80 = 153,147.20 : x
  2. Step 2: Convert to fraction form
    248,624.96/343,168.80 = 153,147.20/x
  3. Step 3: Cross multiply
    248,624.96x = 343,168.80 × 153,147.20
  4. Step 4: Simplify right side
    248,624.96x = 52,555,340,847.36
  5. Step 5: Solve for x
    x = 52,555,340,847.36/248,624.96
  6. Step 6: Final answer
    x = 211,384.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.