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Finding the Fourth Proportional to 308,440.85, 425,470.93 and 181,091.84

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Solution

The fourth proportional to 308,440.85, 425,470.93 and 181,091.84 is: 249,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,440.85 : 425,470.93 = 181,091.84 : x
  2. Step 2: Convert to fraction form
    308,440.85/425,470.93 = 181,091.84/x
  3. Step 3: Cross multiply
    308,440.85x = 425,470.93 × 181,091.84
  4. Step 4: Simplify right side
    308,440.85x = 77,049,311,000.13
  5. Step 5: Solve for x
    x = 77,049,311,000.13/308,440.85
  6. Step 6: Final answer
    x = 249,802.55

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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.