Home / 221,748.80-332,258.40-128,091.20

Finding the Fourth Proportional to 221,748.80, 332,258.40 and 128,091.20

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Solution

The fourth proportional to 221,748.80, 332,258.40 and 128,091.20 is: 191,926.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,748.80 : 332,258.40 = 128,091.20 : x
  2. Step 2: Convert to fraction form
    221,748.80/332,258.40 = 128,091.20/x
  3. Step 3: Cross multiply
    221,748.80x = 332,258.40 × 128,091.20
  4. Step 4: Simplify right side
    221,748.80x = 42,559,377,166.08
  5. Step 5: Solve for x
    x = 42,559,377,166.08/221,748.80
  6. Step 6: Final answer
    x = 191,926.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.