Home / 403,132.05-556,345.20-231,078.65

Finding the Fourth Proportional to 403,132.05, 556,345.20 and 231,078.65

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Solution

The fourth proportional to 403,132.05, 556,345.20 and 231,078.65 is: 318,901.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,132.05 : 556,345.20 = 231,078.65 : x
  2. Step 2: Convert to fraction form
    403,132.05/556,345.20 = 231,078.65/x
  3. Step 3: Cross multiply
    403,132.05x = 556,345.20 × 231,078.65
  4. Step 4: Simplify right side
    403,132.05x = 128,559,494,968.25
  5. Step 5: Solve for x
    x = 128,559,494,968.25/403,132.05
  6. Step 6: Final answer
    x = 318,901.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.