Home / 221,853.34-306,220.40-131,240.80

Finding the Fourth Proportional to 221,853.34, 306,220.40 and 131,240.80

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Solution

The fourth proportional to 221,853.34, 306,220.40 and 131,240.80 is: 181,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,853.34 : 306,220.40 = 131,240.80 : x
  2. Step 2: Convert to fraction form
    221,853.34/306,220.40 = 131,240.80/x
  3. Step 3: Cross multiply
    221,853.34x = 306,220.40 × 131,240.80
  4. Step 4: Simplify right side
    221,853.34x = 40,188,610,272.32
  5. Step 5: Solve for x
    x = 40,188,610,272.32/221,853.34
  6. Step 6: Final answer
    x = 181,149.45

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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.