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Finding the Fourth Proportional to 479,461.60, 718,933.20 and 199,007.20

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Solution

The fourth proportional to 479,461.60, 718,933.20 and 199,007.20 is: 298,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,461.60 : 718,933.20 = 199,007.20 : x
  2. Step 2: Convert to fraction form
    479,461.60/718,933.20 = 199,007.20/x
  3. Step 3: Cross multiply
    479,461.60x = 718,933.20 × 199,007.20
  4. Step 4: Simplify right side
    479,461.60x = 143,072,883,119.04
  5. Step 5: Solve for x
    x = 143,072,883,119.04/479,461.60
  6. Step 6: Final answer
    x = 298,403.22

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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.