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Finding the Fourth Proportional to 508,725.80, 763,198.05 and 153,775.70

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Solution

The fourth proportional to 508,725.80, 763,198.05 and 153,775.70 is: 230,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,725.80 : 763,198.05 = 153,775.70 : x
  2. Step 2: Convert to fraction form
    508,725.80/763,198.05 = 153,775.70/x
  3. Step 3: Cross multiply
    508,725.80x = 763,198.05 × 153,775.70
  4. Step 4: Simplify right side
    508,725.80x = 117,361,314,377.39
  5. Step 5: Solve for x
    x = 117,361,314,377.39/508,725.80
  6. Step 6: Final answer
    x = 230,696.60

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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.