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Finding the Fourth Proportional to 303,478.12, 418,812.90 and 169,342.12

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Solution

The fourth proportional to 303,478.12, 418,812.90 and 169,342.12 is: 233,699.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,478.12 : 418,812.90 = 169,342.12 : x
  2. Step 2: Convert to fraction form
    303,478.12/418,812.90 = 169,342.12/x
  3. Step 3: Cross multiply
    303,478.12x = 418,812.90 × 169,342.12
  4. Step 4: Simplify right side
    303,478.12x = 70,922,664,369.35
  5. Step 5: Solve for x
    x = 70,922,664,369.35/303,478.12
  6. Step 6: Final answer
    x = 233,699.43

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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.