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Finding the Fourth Proportional to 405,541.28, 608,679.59 and 216,160.71

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Solution

The fourth proportional to 405,541.28, 608,679.59 and 216,160.71 is: 324,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,541.28 : 608,679.59 = 216,160.71 : x
  2. Step 2: Convert to fraction form
    405,541.28/608,679.59 = 216,160.71/x
  3. Step 3: Cross multiply
    405,541.28x = 608,679.59 × 216,160.71
  4. Step 4: Simplify right side
    405,541.28x = 131,572,611,256.11
  5. Step 5: Solve for x
    x = 131,572,611,256.11/405,541.28
  6. Step 6: Final answer
    x = 324,437.04

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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.