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Finding the Fourth Proportional to 308,740.28, 463,096.51 and 128,751.59

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Solution

The fourth proportional to 308,740.28, 463,096.51 and 128,751.59 is: 193,121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,740.28 : 463,096.51 = 128,751.59 : x
  2. Step 2: Convert to fraction form
    308,740.28/463,096.51 = 128,751.59/x
  3. Step 3: Cross multiply
    308,740.28x = 463,096.51 × 128,751.59
  4. Step 4: Simplify right side
    308,740.28x = 59,624,412,821.81
  5. Step 5: Solve for x
    x = 59,624,412,821.81/308,740.28
  6. Step 6: Final answer
    x = 193,121.59

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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.