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Finding the Fourth Proportional to 504,734.80, 756,065.40 and 255,557.20

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Solution

The fourth proportional to 504,734.80, 756,065.40 and 255,557.20 is: 382,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,734.80 : 756,065.40 = 255,557.20 : x
  2. Step 2: Convert to fraction form
    504,734.80/756,065.40 = 255,557.20/x
  3. Step 3: Cross multiply
    504,734.80x = 756,065.40 × 255,557.20
  4. Step 4: Simplify right side
    504,734.80x = 193,217,956,640.88
  5. Step 5: Solve for x
    x = 193,217,956,640.88/504,734.80
  6. Step 6: Final answer
    x = 382,810.85

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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.