Home / 286,921.20-429,863.40-253,743.60

Finding the Fourth Proportional to 286,921.20, 429,863.40 and 253,743.60

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Solution

The fourth proportional to 286,921.20, 429,863.40 and 253,743.60 is: 380,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,921.20 : 429,863.40 = 253,743.60 : x
  2. Step 2: Convert to fraction form
    286,921.20/429,863.40 = 253,743.60/x
  3. Step 3: Cross multiply
    286,921.20x = 429,863.40 × 253,743.60
  4. Step 4: Simplify right side
    286,921.20x = 109,075,086,624.24
  5. Step 5: Solve for x
    x = 109,075,086,624.24/286,921.20
  6. Step 6: Final answer
    x = 380,156.94

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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.