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Finding the Fourth Proportional to 308,846.43, 426,172.19 and 172,887.93

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Solution

The fourth proportional to 308,846.43, 426,172.19 and 172,887.93 is: 238,565.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,846.43 : 426,172.19 = 172,887.93 : x
  2. Step 2: Convert to fraction form
    308,846.43/426,172.19 = 172,887.93/x
  3. Step 3: Cross multiply
    308,846.43x = 426,172.19 × 172,887.93
  4. Step 4: Simplify right side
    308,846.43x = 73,680,026,888.23
  5. Step 5: Solve for x
    x = 73,680,026,888.23/308,846.43
  6. Step 6: Final answer
    x = 238,565.25

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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.