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Finding the Fourth Proportional to 286,464.07, 429,740.67 and 86,736.90

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Solution

The fourth proportional to 286,464.07, 429,740.67 and 86,736.90 is: 130,118.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,464.07 : 429,740.67 = 86,736.90 : x
  2. Step 2: Convert to fraction form
    286,464.07/429,740.67 = 86,736.90/x
  3. Step 3: Cross multiply
    286,464.07x = 429,740.67 × 86,736.90
  4. Step 4: Simplify right side
    286,464.07x = 37,274,373,519.72
  5. Step 5: Solve for x
    x = 37,274,373,519.72/286,464.07
  6. Step 6: Final answer
    x = 130,118.85

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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.