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Finding the Fourth Proportional to 170,812.20, 256,218.30 and 162,647.40

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Solution

The fourth proportional to 170,812.20, 256,218.30 and 162,647.40 is: 243,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,812.20 : 256,218.30 = 162,647.40 : x
  2. Step 2: Convert to fraction form
    170,812.20/256,218.30 = 162,647.40/x
  3. Step 3: Cross multiply
    170,812.20x = 256,218.30 × 162,647.40
  4. Step 4: Simplify right side
    170,812.20x = 41,673,240,327.42
  5. Step 5: Solve for x
    x = 41,673,240,327.42/170,812.20
  6. Step 6: Final answer
    x = 243,971.10

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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.