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Finding the Fourth Proportional to 419,222.57, 631,658.54 and 345,983.18

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Solution

The fourth proportional to 419,222.57, 631,658.54 and 345,983.18 is: 521,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,222.57 : 631,658.54 = 345,983.18 : x
  2. Step 2: Convert to fraction form
    419,222.57/631,658.54 = 345,983.18/x
  3. Step 3: Cross multiply
    419,222.57x = 631,658.54 × 345,983.18
  4. Step 4: Simplify right side
    419,222.57x = 218,543,225,455.15
  5. Step 5: Solve for x
    x = 218,543,225,455.15/419,222.57
  6. Step 6: Final answer
    x = 521,305.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.