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Finding the Fourth Proportional to 404,920.85, 607,318.85 and 135,053.70

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Solution

The fourth proportional to 404,920.85, 607,318.85 and 135,053.70 is: 202,559.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,920.85 : 607,318.85 = 135,053.70 : x
  2. Step 2: Convert to fraction form
    404,920.85/607,318.85 = 135,053.70/x
  3. Step 3: Cross multiply
    404,920.85x = 607,318.85 × 135,053.70
  4. Step 4: Simplify right side
    404,920.85x = 82,020,657,096.98
  5. Step 5: Solve for x
    x = 82,020,657,096.98/404,920.85
  6. Step 6: Final answer
    x = 202,559.73

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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.