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Finding the Fourth Proportional to 389,358.89, 537,314.36 and 217,266.29

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Solution

The fourth proportional to 389,358.89, 537,314.36 and 217,266.29 is: 299,826.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,358.89 : 537,314.36 = 217,266.29 : x
  2. Step 2: Convert to fraction form
    389,358.89/537,314.36 = 217,266.29/x
  3. Step 3: Cross multiply
    389,358.89x = 537,314.36 × 217,266.29
  4. Step 4: Simplify right side
    389,358.89x = 116,740,293,788.02
  5. Step 5: Solve for x
    x = 116,740,293,788.02/389,358.89
  6. Step 6: Final answer
    x = 299,826.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.