Home / 221,845.34-306,146.58-121,243.34

Finding the Fourth Proportional to 221,845.34, 306,146.58 and 121,243.34

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Solution

The fourth proportional to 221,845.34, 306,146.58 and 121,243.34 is: 167,315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,845.34 : 306,146.58 = 121,243.34 : x
  2. Step 2: Convert to fraction form
    221,845.34/306,146.58 = 121,243.34/x
  3. Step 3: Cross multiply
    221,845.34x = 306,146.58 × 121,243.34
  4. Step 4: Simplify right side
    221,845.34x = 37,118,233,888.78
  5. Step 5: Solve for x
    x = 37,118,233,888.78/221,845.34
  6. Step 6: Final answer
    x = 167,315.82

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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.