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Finding the Fourth Proportional to 358,338.78, 494,495.12 and 197,178.76

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Solution

The fourth proportional to 358,338.78, 494,495.12 and 197,178.76 is: 272,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,338.78 : 494,495.12 = 197,178.76 : x
  2. Step 2: Convert to fraction form
    358,338.78/494,495.12 = 197,178.76/x
  3. Step 3: Cross multiply
    358,338.78x = 494,495.12 × 197,178.76
  4. Step 4: Simplify right side
    358,338.78x = 97,503,934,587.65
  5. Step 5: Solve for x
    x = 97,503,934,587.65/358,338.78
  6. Step 6: Final answer
    x = 272,099.87

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1.5x scale

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.