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Finding the Fourth Proportional to 399,995.80, 599,994.27 and 163,338.48

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Solution

The fourth proportional to 399,995.80, 599,994.27 and 163,338.48 is: 245,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,995.80 : 599,994.27 = 163,338.48 : x
  2. Step 2: Convert to fraction form
    399,995.80/599,994.27 = 163,338.48/x
  3. Step 3: Cross multiply
    399,995.80x = 599,994.27 × 163,338.48
  4. Step 4: Simplify right side
    399,995.80x = 98,002,152,070.51
  5. Step 5: Solve for x
    x = 98,002,152,070.51/399,995.80
  6. Step 6: Final answer
    x = 245,007.95

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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.