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Finding the Fourth Proportional to 205,390.77, 307,817.76 and 148,655.71

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Solution

The fourth proportional to 205,390.77, 307,817.76 and 148,655.71 is: 222,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,390.77 : 307,817.76 = 148,655.71 : x
  2. Step 2: Convert to fraction form
    205,390.77/307,817.76 = 148,655.71/x
  3. Step 3: Cross multiply
    205,390.77x = 307,817.76 × 148,655.71
  4. Step 4: Simplify right side
    205,390.77x = 45,758,867,663.41
  5. Step 5: Solve for x
    x = 45,758,867,663.41/205,390.77
  6. Step 6: Final answer
    x = 222,789.31

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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.