Home / 311,849.90-430,401.30-204,730.64

Finding the Fourth Proportional to 311,849.90, 430,401.30 and 204,730.64

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Solution

The fourth proportional to 311,849.90, 430,401.30 and 204,730.64 is: 282,560.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,849.90 : 430,401.30 = 204,730.64 : x
  2. Step 2: Convert to fraction form
    311,849.90/430,401.30 = 204,730.64/x
  3. Step 3: Cross multiply
    311,849.90x = 430,401.30 × 204,730.64
  4. Step 4: Simplify right side
    311,849.90x = 88,116,333,605.83
  5. Step 5: Solve for x
    x = 88,116,333,605.83/311,849.90
  6. Step 6: Final answer
    x = 282,560.08

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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.