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Finding the Fourth Proportional to 289,466.60, 399,316.94 and 197,516.92

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Solution

The fourth proportional to 289,466.60, 399,316.94 and 197,516.92 is: 272,473.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,466.60 : 399,316.94 = 197,516.92 : x
  2. Step 2: Convert to fraction form
    289,466.60/399,316.94 = 197,516.92/x
  3. Step 3: Cross multiply
    289,466.60x = 399,316.94 × 197,516.92
  4. Step 4: Simplify right side
    289,466.60x = 78,871,852,092.62
  5. Step 5: Solve for x
    x = 78,871,852,092.62/289,466.60
  6. Step 6: Final answer
    x = 272,473.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.