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Finding the Fourth Proportional to 491,057.39, 736,289.61 and 191,480.51

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Solution

The fourth proportional to 491,057.39, 736,289.61 and 191,480.51 is: 287,105.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,057.39 : 736,289.61 = 191,480.51 : x
  2. Step 2: Convert to fraction form
    491,057.39/736,289.61 = 191,480.51/x
  3. Step 3: Cross multiply
    491,057.39x = 736,289.61 × 191,480.51
  4. Step 4: Simplify right side
    491,057.39x = 140,985,106,349.05
  5. Step 5: Solve for x
    x = 140,985,106,349.05/491,057.39
  6. Step 6: Final answer
    x = 287,105.15

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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.