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Finding the Fourth Proportional to 349,318.10, 481,919 and 220,214.10

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Solution

The fourth proportional to 349,318.10, 481,919 and 220,214.10 is: 303,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,318.10 : 481,919 = 220,214.10 : x
  2. Step 2: Convert to fraction form
    349,318.10/481,919 = 220,214.10/x
  3. Step 3: Cross multiply
    349,318.10x = 481,919 × 220,214.10
  4. Step 4: Simplify right side
    349,318.10x = 106,125,358,857.90
  5. Step 5: Solve for x
    x = 106,125,358,857.90/349,318.10
  6. Step 6: Final answer
    x = 303,807.21

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1.5x scale

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.