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Finding the Fourth Proportional to 213,463.72, 320,148.42 and 61,627.82

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Solution

The fourth proportional to 213,463.72, 320,148.42 and 61,627.82 is: 92,428.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,463.72 : 320,148.42 = 61,627.82 : x
  2. Step 2: Convert to fraction form
    213,463.72/320,148.42 = 61,627.82/x
  3. Step 3: Cross multiply
    213,463.72x = 320,148.42 × 61,627.82
  4. Step 4: Simplify right side
    213,463.72x = 19,730,048,916.41
  5. Step 5: Solve for x
    x = 19,730,048,916.41/213,463.72
  6. Step 6: Final answer
    x = 92,428.11

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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.