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Finding the Fourth Proportional to 404,921.85, 607,320.34 and 135,054.70

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Solution

The fourth proportional to 404,921.85, 607,320.34 and 135,054.70 is: 202,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,921.85 : 607,320.34 = 135,054.70 : x
  2. Step 2: Convert to fraction form
    404,921.85/607,320.34 = 135,054.70/x
  3. Step 3: Cross multiply
    404,921.85x = 607,320.34 × 135,054.70
  4. Step 4: Simplify right side
    404,921.85x = 82,021,466,322.60
  5. Step 5: Solve for x
    x = 82,021,466,322.60/404,921.85
  6. Step 6: Final answer
    x = 202,561.23

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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.