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Finding the Fourth Proportional to 308,544.78, 425,831.22 and 172,586.28

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Solution

The fourth proportional to 308,544.78, 425,831.22 and 172,586.28 is: 238,191.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,544.78 : 425,831.22 = 172,586.28 : x
  2. Step 2: Convert to fraction form
    308,544.78/425,831.22 = 172,586.28/x
  3. Step 3: Cross multiply
    308,544.78x = 425,831.22 × 172,586.28
  4. Step 4: Simplify right side
    308,544.78x = 73,492,626,167.66
  5. Step 5: Solve for x
    x = 73,492,626,167.66/308,544.78
  6. Step 6: Final answer
    x = 238,191.12

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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.