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Finding the Fourth Proportional to 479,389.85, 719,405.53 and 198,907.10

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Solution

The fourth proportional to 479,389.85, 719,405.53 and 198,907.10 is: 298,493.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,389.85 : 719,405.53 = 198,907.10 : x
  2. Step 2: Convert to fraction form
    479,389.85/719,405.53 = 198,907.10/x
  3. Step 3: Cross multiply
    479,389.85x = 719,405.53 × 198,907.10
  4. Step 4: Simplify right side
    479,389.85x = 143,094,867,696.26
  5. Step 5: Solve for x
    x = 143,094,867,696.26/479,389.85
  6. Step 6: Final answer
    x = 298,493.74

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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.