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Finding the Fourth Proportional to 314,812.20, 472,218.30 and 308,251.20

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Solution

The fourth proportional to 314,812.20, 472,218.30 and 308,251.20 is: 462,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,812.20 : 472,218.30 = 308,251.20 : x
  2. Step 2: Convert to fraction form
    314,812.20/472,218.30 = 308,251.20/x
  3. Step 3: Cross multiply
    314,812.20x = 472,218.30 × 308,251.20
  4. Step 4: Simplify right side
    314,812.20x = 145,561,857,636.96
  5. Step 5: Solve for x
    x = 145,561,857,636.96/314,812.20
  6. Step 6: Final answer
    x = 462,376.80

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1.5x scale

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.