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Finding the Fourth Proportional to 307,653.76, 424,562.28 and 169,832.78

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Solution

The fourth proportional to 307,653.76, 424,562.28 and 169,832.78 is: 234,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,653.76 : 424,562.28 = 169,832.78 : x
  2. Step 2: Convert to fraction form
    307,653.76/424,562.28 = 169,832.78/x
  3. Step 3: Cross multiply
    307,653.76x = 424,562.28 × 169,832.78
  4. Step 4: Simplify right side
    307,653.76x = 72,104,592,295.54
  5. Step 5: Solve for x
    x = 72,104,592,295.54/307,653.76
  6. Step 6: Final answer
    x = 234,369.29

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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.