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Finding the Fourth Proportional to 399,995.60, 599,993.40 and 163,216.40

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Solution

The fourth proportional to 399,995.60, 599,993.40 and 163,216.40 is: 244,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,995.60 : 599,993.40 = 163,216.40 : x
  2. Step 2: Convert to fraction form
    399,995.60/599,993.40 = 163,216.40/x
  3. Step 3: Cross multiply
    399,995.60x = 599,993.40 × 163,216.40
  4. Step 4: Simplify right side
    399,995.60x = 97,928,762,771.76
  5. Step 5: Solve for x
    x = 97,928,762,771.76/399,995.60
  6. Step 6: Final answer
    x = 244,824.60

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Similar ratio
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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.