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Finding the Fourth Proportional to 286,651.60, 429,977.40 and 73,419.10

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Solution

The fourth proportional to 286,651.60, 429,977.40 and 73,419.10 is: 110,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,651.60 : 429,977.40 = 73,419.10 : x
  2. Step 2: Convert to fraction form
    286,651.60/429,977.40 = 73,419.10/x
  3. Step 3: Cross multiply
    286,651.60x = 429,977.40 × 73,419.10
  4. Step 4: Simplify right side
    286,651.60x = 31,568,553,728.34
  5. Step 5: Solve for x
    x = 31,568,553,728.34/286,651.60
  6. Step 6: Final answer
    x = 110,128.65

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Similar ratio
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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.