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Finding the Fourth Proportional to 248,987.54, 343,599.80 and 135,807.86

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Solution

The fourth proportional to 248,987.54, 343,599.80 and 135,807.86 is: 187,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,987.54 : 343,599.80 = 135,807.86 : x
  2. Step 2: Convert to fraction form
    248,987.54/343,599.80 = 135,807.86/x
  3. Step 3: Cross multiply
    248,987.54x = 343,599.80 × 135,807.86
  4. Step 4: Simplify right side
    248,987.54x = 46,663,553,534.43
  5. Step 5: Solve for x
    x = 46,663,553,534.43/248,987.54
  6. Step 6: Final answer
    x = 187,413.21

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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.