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Finding the Fourth Proportional to 306,615.53, 459,923.43 and 137,938.88

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Solution

The fourth proportional to 306,615.53, 459,923.43 and 137,938.88 is: 206,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,615.53 : 459,923.43 = 137,938.88 : x
  2. Step 2: Convert to fraction form
    306,615.53/459,923.43 = 137,938.88/x
  3. Step 3: Cross multiply
    306,615.53x = 459,923.43 × 137,938.88
  4. Step 4: Simplify right side
    306,615.53x = 63,441,322,819.96
  5. Step 5: Solve for x
    x = 63,441,322,819.96/306,615.53
  6. Step 6: Final answer
    x = 206,908.38

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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.