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Finding the Fourth Proportional to 204,858.30, 307,287.45 and 163,386.30

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Solution

The fourth proportional to 204,858.30, 307,287.45 and 163,386.30 is: 245,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,858.30 : 307,287.45 = 163,386.30 : x
  2. Step 2: Convert to fraction form
    204,858.30/307,287.45 = 163,386.30/x
  3. Step 3: Cross multiply
    204,858.30x = 307,287.45 × 163,386.30
  4. Step 4: Simplify right side
    204,858.30x = 50,206,559,491.94
  5. Step 5: Solve for x
    x = 50,206,559,491.94/204,858.30
  6. Step 6: Final answer
    x = 245,079.45

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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.