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Finding the Fourth Proportional to 354,125.30, 531,490.35 and 143,914.10

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Solution

The fourth proportional to 354,125.30, 531,490.35 and 143,914.10 is: 215,994.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,125.30 : 531,490.35 = 143,914.10 : x
  2. Step 2: Convert to fraction form
    354,125.30/531,490.35 = 143,914.10/x
  3. Step 3: Cross multiply
    354,125.30x = 531,490.35 × 143,914.10
  4. Step 4: Simplify right side
    354,125.30x = 76,488,955,378.94
  5. Step 5: Solve for x
    x = 76,488,955,378.94/354,125.30
  6. Step 6: Final answer
    x = 215,994.04

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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.