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Finding the Fourth Proportional to 429,358.96, 644,055.76 and 109,519.12

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Solution

The fourth proportional to 429,358.96, 644,055.76 and 109,519.12 is: 164,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,358.96 : 644,055.76 = 109,519.12 : x
  2. Step 2: Convert to fraction form
    429,358.96/644,055.76 = 109,519.12/x
  3. Step 3: Cross multiply
    429,358.96x = 644,055.76 × 109,519.12
  4. Step 4: Simplify right side
    429,358.96x = 70,536,420,066.13
  5. Step 5: Solve for x
    x = 70,536,420,066.13/429,358.96
  6. Step 6: Final answer
    x = 164,283.10

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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.