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Finding the Fourth Proportional to 221,751.86, 306,017.86 and 126,258.60

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Solution

The fourth proportional to 221,751.86, 306,017.86 and 126,258.60 is: 174,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,751.86 : 306,017.86 = 126,258.60 : x
  2. Step 2: Convert to fraction form
    221,751.86/306,017.86 = 126,258.60/x
  3. Step 3: Cross multiply
    221,751.86x = 306,017.86 × 126,258.60
  4. Step 4: Simplify right side
    221,751.86x = 38,637,386,578.60
  5. Step 5: Solve for x
    x = 38,637,386,578.60/221,751.86
  6. Step 6: Final answer
    x = 174,237.03

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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.