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Finding the Fourth Proportional to 368,649.11, 553,188.60 and 155,403.97

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Solution

The fourth proportional to 368,649.11, 553,188.60 and 155,403.97 is: 233,196.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,649.11 : 553,188.60 = 155,403.97 : x
  2. Step 2: Convert to fraction form
    368,649.11/553,188.60 = 155,403.97/x
  3. Step 3: Cross multiply
    368,649.11x = 553,188.60 × 155,403.97
  4. Step 4: Simplify right side
    368,649.11x = 85,967,703,215.77
  5. Step 5: Solve for x
    x = 85,967,703,215.77/368,649.11
  6. Step 6: Final answer
    x = 233,196.56

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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.