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Finding the Fourth Proportional to 286,504.80, 429,755.04 and 76,157.52

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Solution

The fourth proportional to 286,504.80, 429,755.04 and 76,157.52 is: 114,235.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,504.80 : 429,755.04 = 76,157.52 : x
  2. Step 2: Convert to fraction form
    286,504.80/429,755.04 = 76,157.52/x
  3. Step 3: Cross multiply
    286,504.80x = 429,755.04 × 76,157.52
  4. Step 4: Simplify right side
    286,504.80x = 32,729,078,053.90
  5. Step 5: Solve for x
    x = 32,729,078,053.90/286,504.80
  6. Step 6: Final answer
    x = 114,235.71

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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.