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Finding the Fourth Proportional to 326,960.79, 490,442.87 and 99,258.39

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Solution

The fourth proportional to 326,960.79, 490,442.87 and 99,258.39 is: 148,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,960.79 : 490,442.87 = 99,258.39 : x
  2. Step 2: Convert to fraction form
    326,960.79/490,442.87 = 99,258.39/x
  3. Step 3: Cross multiply
    326,960.79x = 490,442.87 × 99,258.39
  4. Step 4: Simplify right side
    326,960.79x = 48,680,569,166.89
  5. Step 5: Solve for x
    x = 48,680,569,166.89/326,960.79
  6. Step 6: Final answer
    x = 148,888.10

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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.