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Finding the Fourth Proportional to 221,657.61, 305,889.46 and 126,170.46

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Solution

The fourth proportional to 221,657.61, 305,889.46 and 126,170.46 is: 174,116.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,657.61 : 305,889.46 = 126,170.46 : x
  2. Step 2: Convert to fraction form
    221,657.61/305,889.46 = 126,170.46/x
  3. Step 3: Cross multiply
    221,657.61x = 305,889.46 × 126,170.46
  4. Step 4: Simplify right side
    221,657.61x = 38,594,214,271.63
  5. Step 5: Solve for x
    x = 38,594,214,271.63/221,657.61
  6. Step 6: Final answer
    x = 174,116.35

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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.