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Finding the Fourth Proportional to 404,729.16, 606,987.91 and 120,343.12

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Solution

The fourth proportional to 404,729.16, 606,987.91 and 120,343.12 is: 180,483.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,729.16 : 606,987.91 = 120,343.12 : x
  2. Step 2: Convert to fraction form
    404,729.16/606,987.91 = 120,343.12/x
  3. Step 3: Cross multiply
    404,729.16x = 606,987.91 × 120,343.12
  4. Step 4: Simplify right side
    404,729.16x = 73,046,817,524.64
  5. Step 5: Solve for x
    x = 73,046,817,524.64/404,729.16
  6. Step 6: Final answer
    x = 180,483.21

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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.