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Finding the Fourth Proportional to 518,178.09, 777,267.13 and 202,413.56

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Solution

The fourth proportional to 518,178.09, 777,267.13 and 202,413.56 is: 303,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,178.09 : 777,267.13 = 202,413.56 : x
  2. Step 2: Convert to fraction form
    518,178.09/777,267.13 = 202,413.56/x
  3. Step 3: Cross multiply
    518,178.09x = 777,267.13 × 202,413.56
  4. Step 4: Simplify right side
    518,178.09x = 157,329,406,854.28
  5. Step 5: Solve for x
    x = 157,329,406,854.28/518,178.09
  6. Step 6: Final answer
    x = 303,620.34

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1.5x scale

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.