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Finding the Fourth Proportional to 478,945.26, 718,491.74 and 163,328.36

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Solution

The fourth proportional to 478,945.26, 718,491.74 and 163,328.36 is: 245,017.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,945.26 : 718,491.74 = 163,328.36 : x
  2. Step 2: Convert to fraction form
    478,945.26/718,491.74 = 163,328.36/x
  3. Step 3: Cross multiply
    478,945.26x = 718,491.74 × 163,328.36
  4. Step 4: Simplify right side
    478,945.26x = 117,350,073,158.65
  5. Step 5: Solve for x
    x = 117,350,073,158.65/478,945.26
  6. Step 6: Final answer
    x = 245,017.71

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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.