Home / 308,139.52-425,077.68-212,699.20

Finding the Fourth Proportional to 308,139.52, 425,077.68 and 212,699.20

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Solution

The fourth proportional to 308,139.52, 425,077.68 and 212,699.20 is: 293,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,139.52 : 425,077.68 = 212,699.20 : x
  2. Step 2: Convert to fraction form
    308,139.52/425,077.68 = 212,699.20/x
  3. Step 3: Cross multiply
    308,139.52x = 425,077.68 × 212,699.20
  4. Step 4: Simplify right side
    308,139.52x = 90,413,682,473.86
  5. Step 5: Solve for x
    x = 90,413,682,473.86/308,139.52
  6. Step 6: Final answer
    x = 293,418.00

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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.