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Finding the Fourth Proportional to 212,601, 318,916.08 and 70,446

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Solution

The fourth proportional to 212,601, 318,916.08 and 70,446 is: 105,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,601 : 318,916.08 = 70,446 : x
  2. Step 2: Convert to fraction form
    212,601/318,916.08 = 70,446/x
  3. Step 3: Cross multiply
    212,601x = 318,916.08 × 70,446
  4. Step 4: Simplify right side
    212,601x = 22,466,362,171.68
  5. Step 5: Solve for x
    x = 22,466,362,171.68/212,601
  6. Step 6: Final answer
    x = 105,673.83

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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.