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Finding the Fourth Proportional to 308,483.09, 425,728.35 and 172,529.69

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Solution

The fourth proportional to 308,483.09, 425,728.35 and 172,529.69 is: 238,103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,483.09 : 425,728.35 = 172,529.69 : x
  2. Step 2: Convert to fraction form
    308,483.09/425,728.35 = 172,529.69/x
  3. Step 3: Cross multiply
    308,483.09x = 425,728.35 × 172,529.69
  4. Step 4: Simplify right side
    308,483.09x = 73,450,778,121.07
  5. Step 5: Solve for x
    x = 73,450,778,121.07/308,483.09
  6. Step 6: Final answer
    x = 238,103.10

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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.