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Finding the Fourth Proportional to 379,474.12, 523,685.12 and 207,401.64

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Solution

The fourth proportional to 379,474.12, 523,685.12 and 207,401.64 is: 286,220.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,474.12 : 523,685.12 = 207,401.64 : x
  2. Step 2: Convert to fraction form
    379,474.12/523,685.12 = 207,401.64/x
  3. Step 3: Cross multiply
    379,474.12x = 523,685.12 × 207,401.64
  4. Step 4: Simplify right side
    379,474.12x = 108,613,152,731.60
  5. Step 5: Solve for x
    x = 108,613,152,731.60/379,474.12
  6. Step 6: Final answer
    x = 286,220.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.