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Finding the Fourth Proportional to 315,401.20, 473,101.80 and 299,849.20

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Solution

The fourth proportional to 315,401.20, 473,101.80 and 299,849.20 is: 449,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,401.20 : 473,101.80 = 299,849.20 : x
  2. Step 2: Convert to fraction form
    315,401.20/473,101.80 = 299,849.20/x
  3. Step 3: Cross multiply
    315,401.20x = 473,101.80 × 299,849.20
  4. Step 4: Simplify right side
    315,401.20x = 141,859,196,248.56
  5. Step 5: Solve for x
    x = 141,859,196,248.56/315,401.20
  6. Step 6: Final answer
    x = 449,773.80

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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.