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Finding the Fourth Proportional to 247,221.93, 341,123.97 and 139,789.59

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Solution

The fourth proportional to 247,221.93, 341,123.97 and 139,789.59 is: 192,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,221.93 : 341,123.97 = 139,789.59 : x
  2. Step 2: Convert to fraction form
    247,221.93/341,123.97 = 139,789.59/x
  3. Step 3: Cross multiply
    247,221.93x = 341,123.97 × 139,789.59
  4. Step 4: Simplify right side
    247,221.93x = 47,685,579,905.47
  5. Step 5: Solve for x
    x = 47,685,579,905.47/247,221.93
  6. Step 6: Final answer
    x = 192,885.72

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1.5x scale

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.