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Finding the Fourth Proportional to 399,996.80, 599,995.77 and 163,339.48

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Solution

The fourth proportional to 399,996.80, 599,995.77 and 163,339.48 is: 245,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,996.80 : 599,995.77 = 163,339.48 : x
  2. Step 2: Convert to fraction form
    399,996.80/599,995.77 = 163,339.48/x
  3. Step 3: Cross multiply
    399,996.80x = 599,995.77 × 163,339.48
  4. Step 4: Simplify right side
    399,996.80x = 98,002,997,074.00
  5. Step 5: Solve for x
    x = 98,002,997,074.00/399,996.80
  6. Step 6: Final answer
    x = 245,009.45

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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.