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Finding the Fourth Proportional to 221,925.28, 306,240.30 and 126,413.32

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Solution

The fourth proportional to 221,925.28, 306,240.30 and 126,413.32 is: 174,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,925.28 : 306,240.30 = 126,413.32 : x
  2. Step 2: Convert to fraction form
    221,925.28/306,240.30 = 126,413.32/x
  3. Step 3: Cross multiply
    221,925.28x = 306,240.30 × 126,413.32
  4. Step 4: Simplify right side
    221,925.28x = 38,712,853,040.80
  5. Step 5: Solve for x
    x = 38,712,853,040.80/221,925.28
  6. Step 6: Final answer
    x = 174,440.93

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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.