Home / 403,987.12-605,979.66-119,699.80

Finding the Fourth Proportional to 403,987.12, 605,979.66 and 119,699.80

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Solution

The fourth proportional to 403,987.12, 605,979.66 and 119,699.80 is: 179,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,987.12 : 605,979.66 = 119,699.80 : x
  2. Step 2: Convert to fraction form
    403,987.12/605,979.66 = 119,699.80/x
  3. Step 3: Cross multiply
    403,987.12x = 605,979.66 × 119,699.80
  4. Step 4: Simplify right side
    403,987.12x = 72,535,644,106.07
  5. Step 5: Solve for x
    x = 72,535,644,106.07/403,987.12
  6. Step 6: Final answer
    x = 179,549.40

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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.