Home / 290,115.24-435,261.93-138,505.76

Finding the Fourth Proportional to 290,115.24, 435,261.93 and 138,505.76

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Solution

The fourth proportional to 290,115.24, 435,261.93 and 138,505.76 is: 207,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,115.24 : 435,261.93 = 138,505.76 : x
  2. Step 2: Convert to fraction form
    290,115.24/435,261.93 = 138,505.76/x
  3. Step 3: Cross multiply
    290,115.24x = 435,261.93 × 138,505.76
  4. Step 4: Simplify right side
    290,115.24x = 60,286,284,413.72
  5. Step 5: Solve for x
    x = 60,286,284,413.72/290,115.24
  6. Step 6: Final answer
    x = 207,801.16

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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.