Home / 803,421.12-1,205,138.64-204,382.92

Finding the Fourth Proportional to 803,421.12, 1,205,138.64 and 204,382.92

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Solution

The fourth proportional to 803,421.12, 1,205,138.64 and 204,382.92 is: 306,576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,421.12 : 1,205,138.64 = 204,382.92 : x
  2. Step 2: Convert to fraction form
    803,421.12/1,205,138.64 = 204,382.92/x
  3. Step 3: Cross multiply
    803,421.12x = 1,205,138.64 × 204,382.92
  4. Step 4: Simplify right side
    803,421.12x = 246,309,754,248.03
  5. Step 5: Solve for x
    x = 246,309,754,248.03/803,421.12
  6. Step 6: Final answer
    x = 306,576.15

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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.