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Finding the Fourth Proportional to 429,181.51, 643,796.88 and 113,630.22

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Solution

The fourth proportional to 429,181.51, 643,796.88 and 113,630.22 is: 170,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,181.51 : 643,796.88 = 113,630.22 : x
  2. Step 2: Convert to fraction form
    429,181.51/643,796.88 = 113,630.22/x
  3. Step 3: Cross multiply
    429,181.51x = 643,796.88 × 113,630.22
  4. Step 4: Simplify right side
    429,181.51x = 73,154,781,109.71
  5. Step 5: Solve for x
    x = 73,154,781,109.71/429,181.51
  6. Step 6: Final answer
    x = 170,451.85

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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.