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Finding the Fourth Proportional to 549,220.50, 757,935.81 and 310,756.50

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Solution

The fourth proportional to 549,220.50, 757,935.81 and 310,756.50 is: 428,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,220.50 : 757,935.81 = 310,756.50 : x
  2. Step 2: Convert to fraction form
    549,220.50/757,935.81 = 310,756.50/x
  3. Step 3: Cross multiply
    549,220.50x = 757,935.81 × 310,756.50
  4. Step 4: Simplify right side
    549,220.50x = 235,533,479,540.27
  5. Step 5: Solve for x
    x = 235,533,479,540.27/549,220.50
  6. Step 6: Final answer
    x = 428,850.49

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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.