Home / 387,565.93-534,847.20-213,143.03

Finding the Fourth Proportional to 387,565.93, 534,847.20 and 213,143.03

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Solution

The fourth proportional to 387,565.93, 534,847.20 and 213,143.03 is: 294,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,565.93 : 534,847.20 = 213,143.03 : x
  2. Step 2: Convert to fraction form
    387,565.93/534,847.20 = 213,143.03/x
  3. Step 3: Cross multiply
    387,565.93x = 534,847.20 × 213,143.03
  4. Step 4: Simplify right side
    387,565.93x = 113,998,952,795.02
  5. Step 5: Solve for x
    x = 113,998,952,795.02/387,565.93
  6. Step 6: Final answer
    x = 294,140.80

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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.