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Finding the Fourth Proportional to 519,139.88, 716,413.03 and 280,675.88

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Solution

The fourth proportional to 519,139.88, 716,413.03 and 280,675.88 is: 387,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,139.88 : 716,413.03 = 280,675.88 : x
  2. Step 2: Convert to fraction form
    519,139.88/716,413.03 = 280,675.88/x
  3. Step 3: Cross multiply
    519,139.88x = 716,413.03 × 280,675.88
  4. Step 4: Simplify right side
    519,139.88x = 201,079,853,354.96
  5. Step 5: Solve for x
    x = 201,079,853,354.96/519,139.88
  6. Step 6: Final answer
    x = 387,332.71

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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.