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Finding the Fourth Proportional to 429,397.08, 644,095.62 and 113,878.59

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Solution

The fourth proportional to 429,397.08, 644,095.62 and 113,878.59 is: 170,817.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,397.08 : 644,095.62 = 113,878.59 : x
  2. Step 2: Convert to fraction form
    429,397.08/644,095.62 = 113,878.59/x
  3. Step 3: Cross multiply
    429,397.08x = 644,095.62 × 113,878.59
  4. Step 4: Simplify right side
    429,397.08x = 73,348,701,030.78
  5. Step 5: Solve for x
    x = 73,348,701,030.78/429,397.08
  6. Step 6: Final answer
    x = 170,817.89

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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.