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Finding the Fourth Proportional to 404,743.36, 607,123.28 and 138,809.56

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Solution

The fourth proportional to 404,743.36, 607,123.28 and 138,809.56 is: 208,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,743.36 : 607,123.28 = 138,809.56 : x
  2. Step 2: Convert to fraction form
    404,743.36/607,123.28 = 138,809.56/x
  3. Step 3: Cross multiply
    404,743.36x = 607,123.28 × 138,809.56
  4. Step 4: Simplify right side
    404,743.36x = 84,274,515,362.56
  5. Step 5: Solve for x
    x = 84,274,515,362.56/404,743.36
  6. Step 6: Final answer
    x = 208,217.17

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1.5x scale

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.