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Finding the Fourth Proportional to 321,846.40, 482,769.60 and 314,934.40

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Solution

The fourth proportional to 321,846.40, 482,769.60 and 314,934.40 is: 472,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,846.40 : 482,769.60 = 314,934.40 : x
  2. Step 2: Convert to fraction form
    321,846.40/482,769.60 = 314,934.40/x
  3. Step 3: Cross multiply
    321,846.40x = 482,769.60 × 314,934.40
  4. Step 4: Simplify right side
    321,846.40x = 152,040,754,314.24
  5. Step 5: Solve for x
    x = 152,040,754,314.24/321,846.40
  6. Step 6: Final answer
    x = 472,401.60

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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.