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Finding the Fourth Proportional to 286,841.40, 395,834.22 and 156,015.69

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Solution

The fourth proportional to 286,841.40, 395,834.22 and 156,015.69 is: 215,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,841.40 : 395,834.22 = 156,015.69 : x
  2. Step 2: Convert to fraction form
    286,841.40/395,834.22 = 156,015.69/x
  3. Step 3: Cross multiply
    286,841.40x = 395,834.22 × 156,015.69
  4. Step 4: Simplify right side
    286,841.40x = 61,756,348,958.91
  5. Step 5: Solve for x
    x = 61,756,348,958.91/286,841.40
  6. Step 6: Final answer
    x = 215,297.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.