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Finding the Fourth Proportional to 478,976.28, 718,486.29 and 163,435.92

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Solution

The fourth proportional to 478,976.28, 718,486.29 and 163,435.92 is: 245,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,976.28 : 718,486.29 = 163,435.92 : x
  2. Step 2: Convert to fraction form
    478,976.28/718,486.29 = 163,435.92/x
  3. Step 3: Cross multiply
    478,976.28x = 718,486.29 × 163,435.92
  4. Step 4: Simplify right side
    478,976.28x = 117,426,467,813.54
  5. Step 5: Solve for x
    x = 117,426,467,813.54/478,976.28
  6. Step 6: Final answer
    x = 245,161.34

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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.