Home / 387,564.23-534,882.93-215,499.35

Finding the Fourth Proportional to 387,564.23, 534,882.93 and 215,499.35

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Solution

The fourth proportional to 387,564.23, 534,882.93 and 215,499.35 is: 297,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,564.23 : 534,882.93 = 215,499.35 : x
  2. Step 2: Convert to fraction form
    387,564.23/534,882.93 = 215,499.35/x
  3. Step 3: Cross multiply
    387,564.23x = 534,882.93 × 215,499.35
  4. Step 4: Simplify right side
    387,564.23x = 115,266,923,741.10
  5. Step 5: Solve for x
    x = 115,266,923,741.10/387,564.23
  6. Step 6: Final answer
    x = 297,413.73

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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.