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Finding the Fourth Proportional to 464,620.30, 641,401.31 and 311,602.52

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Solution

The fourth proportional to 464,620.30, 641,401.31 and 311,602.52 is: 430,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,620.30 : 641,401.31 = 311,602.52 : x
  2. Step 2: Convert to fraction form
    464,620.30/641,401.31 = 311,602.52/x
  3. Step 3: Cross multiply
    464,620.30x = 641,401.31 × 311,602.52
  4. Step 4: Simplify right side
    464,620.30x = 199,862,264,572.79
  5. Step 5: Solve for x
    x = 199,862,264,572.79/464,620.30
  6. Step 6: Final answer
    x = 430,162.58

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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.