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Finding the Fourth Proportional to 404,646.75, 606,999.30 and 155,328.75

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Solution

The fourth proportional to 404,646.75, 606,999.30 and 155,328.75 is: 233,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,646.75 : 606,999.30 = 155,328.75 : x
  2. Step 2: Convert to fraction form
    404,646.75/606,999.30 = 155,328.75/x
  3. Step 3: Cross multiply
    404,646.75x = 606,999.30 × 155,328.75
  4. Step 4: Simplify right side
    404,646.75x = 94,284,442,519.88
  5. Step 5: Solve for x
    x = 94,284,442,519.88/404,646.75
  6. Step 6: Final answer
    x = 233,004.32

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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.