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Finding the Fourth Proportional to 624,643.20, 937,402.20 and 269,911.80

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Solution

The fourth proportional to 624,643.20, 937,402.20 and 269,911.80 is: 405,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,643.20 : 937,402.20 = 269,911.80 : x
  2. Step 2: Convert to fraction form
    624,643.20/937,402.20 = 269,911.80/x
  3. Step 3: Cross multiply
    624,643.20x = 937,402.20 × 269,911.80
  4. Step 4: Simplify right side
    624,643.20x = 253,015,915,125.96
  5. Step 5: Solve for x
    x = 253,015,915,125.96/624,643.20
  6. Step 6: Final answer
    x = 405,056.70

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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.