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Finding the Fourth Proportional to 379,109.92, 568,671.02 and 126,386.98

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Solution

The fourth proportional to 379,109.92, 568,671.02 and 126,386.98 is: 189,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,109.92 : 568,671.02 = 126,386.98 : x
  2. Step 2: Convert to fraction form
    379,109.92/568,671.02 = 126,386.98/x
  3. Step 3: Cross multiply
    379,109.92x = 568,671.02 × 126,386.98
  4. Step 4: Simplify right side
    379,109.92x = 71,872,612,831.32
  5. Step 5: Solve for x
    x = 71,872,612,831.32/379,109.92
  6. Step 6: Final answer
    x = 189,582.52

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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.