Home / 221,962.56-306,238.55-135,831.75

Finding the Fourth Proportional to 221,962.56, 306,238.55 and 135,831.75

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Solution

The fourth proportional to 221,962.56, 306,238.55 and 135,831.75 is: 187,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,962.56 : 306,238.55 = 135,831.75 : x
  2. Step 2: Convert to fraction form
    221,962.56/306,238.55 = 135,831.75/x
  3. Step 3: Cross multiply
    221,962.56x = 306,238.55 × 135,831.75
  4. Step 4: Simplify right side
    221,962.56x = 41,596,917,484.80
  5. Step 5: Solve for x
    x = 41,596,917,484.80/221,962.56
  6. Step 6: Final answer
    x = 187,405.11

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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.