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Finding the Fourth Proportional to 328,637.40, 492,761.70 and 171,173.40

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Solution

The fourth proportional to 328,637.40, 492,761.70 and 171,173.40 is: 256,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,637.40 : 492,761.70 = 171,173.40 : x
  2. Step 2: Convert to fraction form
    328,637.40/492,761.70 = 171,173.40/x
  3. Step 3: Cross multiply
    328,637.40x = 492,761.70 × 171,173.40
  4. Step 4: Simplify right side
    328,637.40x = 84,347,695,578.78
  5. Step 5: Solve for x
    x = 84,347,695,578.78/328,637.40
  6. Step 6: Final answer
    x = 256,658.85

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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.