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Finding the Fourth Proportional to 351,606.36, 485,118.35 and 220,798.13

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Solution

The fourth proportional to 351,606.36, 485,118.35 and 220,798.13 is: 304,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,606.36 : 485,118.35 = 220,798.13 : x
  2. Step 2: Convert to fraction form
    351,606.36/485,118.35 = 220,798.13/x
  3. Step 3: Cross multiply
    351,606.36x = 485,118.35 × 220,798.13
  4. Step 4: Simplify right side
    351,606.36x = 107,113,220,979.10
  5. Step 5: Solve for x
    x = 107,113,220,979.10/351,606.36
  6. Step 6: Final answer
    x = 304,639.60

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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.