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Finding the Fourth Proportional to 228,681.61, 342,839.25 and 108,678.33

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Solution

The fourth proportional to 228,681.61, 342,839.25 and 108,678.33 is: 162,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,681.61 : 342,839.25 = 108,678.33 : x
  2. Step 2: Convert to fraction form
    228,681.61/342,839.25 = 108,678.33/x
  3. Step 3: Cross multiply
    228,681.61x = 342,839.25 × 108,678.33
  4. Step 4: Simplify right side
    228,681.61x = 37,259,197,148.45
  5. Step 5: Solve for x
    x = 37,259,197,148.45/228,681.61
  6. Step 6: Final answer
    x = 162,930.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.