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Finding the Fourth Proportional to 398,445.40, 597,828.30 and 161,806.60

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Solution

The fourth proportional to 398,445.40, 597,828.30 and 161,806.60 is: 242,774.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,445.40 : 597,828.30 = 161,806.60 : x
  2. Step 2: Convert to fraction form
    398,445.40/597,828.30 = 161,806.60/x
  3. Step 3: Cross multiply
    398,445.40x = 597,828.30 × 161,806.60
  4. Step 4: Simplify right side
    398,445.40x = 96,732,564,606.78
  5. Step 5: Solve for x
    x = 96,732,564,606.78/398,445.40
  6. Step 6: Final answer
    x = 242,774.96

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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.