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Finding the Fourth Proportional to 286,286.80, 428,555.40 and 223,301.20

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Solution

The fourth proportional to 286,286.80, 428,555.40 and 223,301.20 is: 334,269.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,286.80 : 428,555.40 = 223,301.20 : x
  2. Step 2: Convert to fraction form
    286,286.80/428,555.40 = 223,301.20/x
  3. Step 3: Cross multiply
    286,286.80x = 428,555.40 × 223,301.20
  4. Step 4: Simplify right side
    286,286.80x = 95,696,935,086.48
  5. Step 5: Solve for x
    x = 95,696,935,086.48/286,286.80
  6. Step 6: Final answer
    x = 334,269.46

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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.