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Finding the Fourth Proportional to 326,110.40, 488,582.40 and 279,454.40

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Solution

The fourth proportional to 326,110.40, 488,582.40 and 279,454.40 is: 418,681.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,110.40 : 488,582.40 = 279,454.40 : x
  2. Step 2: Convert to fraction form
    326,110.40/488,582.40 = 279,454.40/x
  3. Step 3: Cross multiply
    326,110.40x = 488,582.40 × 279,454.40
  4. Step 4: Simplify right side
    326,110.40x = 136,536,501,442.56
  5. Step 5: Solve for x
    x = 136,536,501,442.56/326,110.40
  6. Step 6: Final answer
    x = 418,681.84

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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.