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Finding the Fourth Proportional to 402,371.73, 555,064.78 and 273,316.86

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Solution

The fourth proportional to 402,371.73, 555,064.78 and 273,316.86 is: 377,035.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,371.73 : 555,064.78 = 273,316.86 : x
  2. Step 2: Convert to fraction form
    402,371.73/555,064.78 = 273,316.86/x
  3. Step 3: Cross multiply
    402,371.73x = 555,064.78 × 273,316.86
  4. Step 4: Simplify right side
    402,371.73x = 151,708,562,766.19
  5. Step 5: Solve for x
    x = 151,708,562,766.19/402,371.73
  6. Step 6: Final answer
    x = 377,035.84

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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.