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Finding the Fourth Proportional to 479,097.60, 718,905.60 and 198,643.20

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Solution

The fourth proportional to 479,097.60, 718,905.60 and 198,643.20 is: 298,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,097.60 : 718,905.60 = 198,643.20 : x
  2. Step 2: Convert to fraction form
    479,097.60/718,905.60 = 198,643.20/x
  3. Step 3: Cross multiply
    479,097.60x = 718,905.60 × 198,643.20
  4. Step 4: Simplify right side
    479,097.60x = 142,805,708,881.92
  5. Step 5: Solve for x
    x = 142,805,708,881.92/479,097.60
  6. Step 6: Final answer
    x = 298,072.27

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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.