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Finding the Fourth Proportional to 404,136, 606,228.30 and 123,655.68

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Solution

The fourth proportional to 404,136, 606,228.30 and 123,655.68 is: 185,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,136 : 606,228.30 = 123,655.68 : x
  2. Step 2: Convert to fraction form
    404,136/606,228.30 = 123,655.68/x
  3. Step 3: Cross multiply
    404,136x = 606,228.30 × 123,655.68
  4. Step 4: Simplify right side
    404,136x = 74,963,572,671.74
  5. Step 5: Solve for x
    x = 74,963,572,671.74/404,136
  6. Step 6: Final answer
    x = 185,490.96

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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.