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Finding the Fourth Proportional to 170,903.40, 256,355.10 and 161,061.90

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Solution

The fourth proportional to 170,903.40, 256,355.10 and 161,061.90 is: 241,592.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,903.40 : 256,355.10 = 161,061.90 : x
  2. Step 2: Convert to fraction form
    170,903.40/256,355.10 = 161,061.90/x
  3. Step 3: Cross multiply
    170,903.40x = 256,355.10 × 161,061.90
  4. Step 4: Simplify right side
    170,903.40x = 41,289,039,480.69
  5. Step 5: Solve for x
    x = 41,289,039,480.69/170,903.40
  6. Step 6: Final answer
    x = 241,592.85

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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.