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Finding the Fourth Proportional to 308,902.73, 426,265.70 and 172,935.59

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Solution

The fourth proportional to 308,902.73, 426,265.70 and 172,935.59 is: 238,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,902.73 : 426,265.70 = 172,935.59 : x
  2. Step 2: Convert to fraction form
    308,902.73/426,265.70 = 172,935.59/x
  3. Step 3: Cross multiply
    308,902.73x = 426,265.70 × 172,935.59
  4. Step 4: Simplify right side
    308,902.73x = 73,716,509,461.59
  5. Step 5: Solve for x
    x = 73,716,509,461.59/308,902.73
  6. Step 6: Final answer
    x = 238,639.88

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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.