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Finding the Fourth Proportional to 305,715.60, 457,536.60 and 268,390.80

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Solution

The fourth proportional to 305,715.60, 457,536.60 and 268,390.80 is: 401,675.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,715.60 : 457,536.60 = 268,390.80 : x
  2. Step 2: Convert to fraction form
    305,715.60/457,536.60 = 268,390.80/x
  3. Step 3: Cross multiply
    305,715.60x = 457,536.60 × 268,390.80
  4. Step 4: Simplify right side
    305,715.60x = 122,798,614,103.28
  5. Step 5: Solve for x
    x = 122,798,614,103.28/305,715.60
  6. Step 6: Final answer
    x = 401,675.98

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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.