Home / 220,935.20-331,402.80-211,258.40

Finding the Fourth Proportional to 220,935.20, 331,402.80 and 211,258.40

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Solution

The fourth proportional to 220,935.20, 331,402.80 and 211,258.40 is: 316,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,935.20 : 331,402.80 = 211,258.40 : x
  2. Step 2: Convert to fraction form
    220,935.20/331,402.80 = 211,258.40/x
  3. Step 3: Cross multiply
    220,935.20x = 331,402.80 × 211,258.40
  4. Step 4: Simplify right side
    220,935.20x = 70,011,625,283.52
  5. Step 5: Solve for x
    x = 70,011,625,283.52/220,935.20
  6. Step 6: Final answer
    x = 316,887.60

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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.