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Finding the Fourth Proportional to 216,938.10, 325,601.55 and 187,389.30

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Solution

The fourth proportional to 216,938.10, 325,601.55 and 187,389.30 is: 281,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,938.10 : 325,601.55 = 187,389.30 : x
  2. Step 2: Convert to fraction form
    216,938.10/325,601.55 = 187,389.30/x
  3. Step 3: Cross multiply
    216,938.10x = 325,601.55 × 187,389.30
  4. Step 4: Simplify right side
    216,938.10x = 61,014,246,533.42
  5. Step 5: Solve for x
    x = 61,014,246,533.42/216,938.10
  6. Step 6: Final answer
    x = 281,251.87

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1.5x scale

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.