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Finding the Fourth Proportional to 201,663.20, 300,425.32 and 192,565.28

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Solution

The fourth proportional to 201,663.20, 300,425.32 and 192,565.28 is: 286,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,663.20 : 300,425.32 = 192,565.28 : x
  2. Step 2: Convert to fraction form
    201,663.20/300,425.32 = 192,565.28/x
  3. Step 3: Cross multiply
    201,663.20x = 300,425.32 × 192,565.28
  4. Step 4: Simplify right side
    201,663.20x = 57,851,485,864.89
  5. Step 5: Solve for x
    x = 57,851,485,864.89/201,663.20
  6. Step 6: Final answer
    x = 286,871.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.