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Finding the Fourth Proportional to 219,552.81, 302,978.91 and 124,057.45

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Solution

The fourth proportional to 219,552.81, 302,978.91 and 124,057.45 is: 171,197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,552.81 : 302,978.91 = 124,057.45 : x
  2. Step 2: Convert to fraction form
    219,552.81/302,978.91 = 124,057.45/x
  3. Step 3: Cross multiply
    219,552.81x = 302,978.91 × 124,057.45
  4. Step 4: Simplify right side
    219,552.81x = 37,586,790,978.38
  5. Step 5: Solve for x
    x = 37,586,790,978.38/219,552.81
  6. Step 6: Final answer
    x = 171,197.04

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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.