Home / 387,530.27-534,793.84-213,111.72

Finding the Fourth Proportional to 387,530.27, 534,793.84 and 213,111.72

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Solution

The fourth proportional to 387,530.27, 534,793.84 and 213,111.72 is: 294,095.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,530.27 : 534,793.84 = 213,111.72 : x
  2. Step 2: Convert to fraction form
    387,530.27/534,793.84 = 213,111.72/x
  3. Step 3: Cross multiply
    387,530.27x = 534,793.84 × 213,111.72
  4. Step 4: Simplify right side
    387,530.27x = 113,970,832,413.84
  5. Step 5: Solve for x
    x = 113,970,832,413.84/387,530.27
  6. Step 6: Final answer
    x = 294,095.31

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1.5x scale

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.