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Finding the Fourth Proportional to 540,081.48, 745,308.90 and 298,379.64

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Solution

The fourth proportional to 540,081.48, 745,308.90 and 298,379.64 is: 411,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,081.48 : 745,308.90 = 298,379.64 : x
  2. Step 2: Convert to fraction form
    540,081.48/745,308.90 = 298,379.64/x
  3. Step 3: Cross multiply
    540,081.48x = 745,308.90 × 298,379.64
  4. Step 4: Simplify right side
    540,081.48x = 222,385,001,270.80
  5. Step 5: Solve for x
    x = 222,385,001,270.80/540,081.48
  6. Step 6: Final answer
    x = 411,761.95

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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.