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Finding the Fourth Proportional to 308,792.38, 426,238.59 and 181,505.74

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Solution

The fourth proportional to 308,792.38, 426,238.59 and 181,505.74 is: 250,539.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,792.38 : 426,238.59 = 181,505.74 : x
  2. Step 2: Convert to fraction form
    308,792.38/426,238.59 = 181,505.74/x
  3. Step 3: Cross multiply
    308,792.38x = 426,238.59 × 181,505.74
  4. Step 4: Simplify right side
    308,792.38x = 77,364,750,694.51
  5. Step 5: Solve for x
    x = 77,364,750,694.51/308,792.38
  6. Step 6: Final answer
    x = 250,539.70

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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.