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Finding the Fourth Proportional to 286,507.80, 428,886.90 and 223,522.20

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Solution

The fourth proportional to 286,507.80, 428,886.90 and 223,522.20 is: 334,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,507.80 : 428,886.90 = 223,522.20 : x
  2. Step 2: Convert to fraction form
    286,507.80/428,886.90 = 223,522.20/x
  3. Step 3: Cross multiply
    286,507.80x = 428,886.90 × 223,522.20
  4. Step 4: Simplify right side
    286,507.80x = 95,865,743,439.18
  5. Step 5: Solve for x
    x = 95,865,743,439.18/286,507.80
  6. Step 6: Final answer
    x = 334,600.82

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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.