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Finding the Fourth Proportional to 504,498.80, 755,711.40 and 255,321.20

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Solution

The fourth proportional to 504,498.80, 755,711.40 and 255,321.20 is: 382,457.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,498.80 : 755,711.40 = 255,321.20 : x
  2. Step 2: Convert to fraction form
    504,498.80/755,711.40 = 255,321.20/x
  3. Step 3: Cross multiply
    504,498.80x = 755,711.40 × 255,321.20
  4. Step 4: Simplify right side
    504,498.80x = 192,949,141,501.68
  5. Step 5: Solve for x
    x = 192,949,141,501.68/504,498.80
  6. Step 6: Final answer
    x = 382,457.09

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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.