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Finding the Fourth Proportional to 308,937.57, 426,313.22 and 172,948.56

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Solution

The fourth proportional to 308,937.57, 426,313.22 and 172,948.56 is: 238,657.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,937.57 : 426,313.22 = 172,948.56 : x
  2. Step 2: Convert to fraction form
    308,937.57/426,313.22 = 172,948.56/x
  3. Step 3: Cross multiply
    308,937.57x = 426,313.22 × 172,948.56
  4. Step 4: Simplify right side
    308,937.57x = 73,730,256,643.22
  5. Step 5: Solve for x
    x = 73,730,256,643.22/308,937.57
  6. Step 6: Final answer
    x = 238,657.46

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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.