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Finding the Fourth Proportional to 549,086.45, 757,739.61 and 307,369.49

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Solution

The fourth proportional to 549,086.45, 757,739.61 and 307,369.49 is: 424,170.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,086.45 : 757,739.61 = 307,369.49 : x
  2. Step 2: Convert to fraction form
    549,086.45/757,739.61 = 307,369.49/x
  3. Step 3: Cross multiply
    549,086.45x = 757,739.61 × 307,369.49
  4. Step 4: Simplify right side
    549,086.45x = 232,906,033,689.80
  5. Step 5: Solve for x
    x = 232,906,033,689.80/549,086.45
  6. Step 6: Final answer
    x = 424,170.07

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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.