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Finding the Fourth Proportional to 328,463.40, 492,711.30 and 170,999.40

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Solution

The fourth proportional to 328,463.40, 492,711.30 and 170,999.40 is: 256,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,463.40 : 492,711.30 = 170,999.40 : x
  2. Step 2: Convert to fraction form
    328,463.40/492,711.30 = 170,999.40/x
  3. Step 3: Cross multiply
    328,463.40x = 492,711.30 × 170,999.40
  4. Step 4: Simplify right side
    328,463.40x = 84,253,336,673.22
  5. Step 5: Solve for x
    x = 84,253,336,673.22/328,463.40
  6. Step 6: Final answer
    x = 256,507.53

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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.