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Finding the Fourth Proportional to 286,250.40, 429,375.60 and 263,440.80

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Solution

The fourth proportional to 286,250.40, 429,375.60 and 263,440.80 is: 395,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,250.40 : 429,375.60 = 263,440.80 : x
  2. Step 2: Convert to fraction form
    286,250.40/429,375.60 = 263,440.80/x
  3. Step 3: Cross multiply
    286,250.40x = 429,375.60 × 263,440.80
  4. Step 4: Simplify right side
    286,250.40x = 113,115,051,564.48
  5. Step 5: Solve for x
    x = 113,115,051,564.48/286,250.40
  6. Step 6: Final answer
    x = 395,161.20

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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.