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Finding the Fourth Proportional to 286,507.86, 429,555.94 and 134,619.29

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Solution

The fourth proportional to 286,507.86, 429,555.94 and 134,619.29 is: 201,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,507.86 : 429,555.94 = 134,619.29 : x
  2. Step 2: Convert to fraction form
    286,507.86/429,555.94 = 134,619.29/x
  3. Step 3: Cross multiply
    286,507.86x = 429,555.94 × 134,619.29
  4. Step 4: Simplify right side
    286,507.86x = 57,826,515,658.08
  5. Step 5: Solve for x
    x = 57,826,515,658.08/286,507.86
  6. Step 6: Final answer
    x = 201,832.21

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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.