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Finding the Fourth Proportional to 404,738.68, 607,137.36 and 155,420.68

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Solution

The fourth proportional to 404,738.68, 607,137.36 and 155,420.68 is: 233,142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,738.68 : 607,137.36 = 155,420.68 : x
  2. Step 2: Convert to fraction form
    404,738.68/607,137.36 = 155,420.68/x
  3. Step 3: Cross multiply
    404,738.68x = 607,137.36 × 155,420.68
  4. Step 4: Simplify right side
    404,738.68x = 94,361,701,344.60
  5. Step 5: Solve for x
    x = 94,361,701,344.60/404,738.68
  6. Step 6: Final answer
    x = 233,142.29

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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.