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Finding the Fourth Proportional to 370,419.18, 555,628.77 and 89,934.54

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Solution

The fourth proportional to 370,419.18, 555,628.77 and 89,934.54 is: 134,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,419.18 : 555,628.77 = 89,934.54 : x
  2. Step 2: Convert to fraction form
    370,419.18/555,628.77 = 89,934.54/x
  3. Step 3: Cross multiply
    370,419.18x = 555,628.77 × 89,934.54
  4. Step 4: Simplify right side
    370,419.18x = 49,970,217,840.72
  5. Step 5: Solve for x
    x = 49,970,217,840.72/370,419.18
  6. Step 6: Final answer
    x = 134,901.81

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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.