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Finding the Fourth Proportional to 405,687.60, 608,531.40 and 168,951.60

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Solution

The fourth proportional to 405,687.60, 608,531.40 and 168,951.60 is: 253,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,687.60 : 608,531.40 = 168,951.60 : x
  2. Step 2: Convert to fraction form
    405,687.60/608,531.40 = 168,951.60/x
  3. Step 3: Cross multiply
    405,687.60x = 608,531.40 × 168,951.60
  4. Step 4: Simplify right side
    405,687.60x = 102,812,353,680.24
  5. Step 5: Solve for x
    x = 102,812,353,680.24/405,687.60
  6. Step 6: Final answer
    x = 253,427.40

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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.