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Finding the Fourth Proportional to 250,491.97, 345,678.42 and 137,315.53

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Solution

The fourth proportional to 250,491.97, 345,678.42 and 137,315.53 is: 189,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,491.97 : 345,678.42 = 137,315.53 : x
  2. Step 2: Convert to fraction form
    250,491.97/345,678.42 = 137,315.53/x
  3. Step 3: Cross multiply
    250,491.97x = 345,678.42 × 137,315.53
  4. Step 4: Simplify right side
    250,491.97x = 47,467,015,451.86
  5. Step 5: Solve for x
    x = 47,467,015,451.86/250,491.97
  6. Step 6: Final answer
    x = 189,495.16

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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.