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Finding the Fourth Proportional to 248,684.40, 343,184.40 and 135,507.06

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Solution

The fourth proportional to 248,684.40, 343,184.40 and 135,507.06 is: 186,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,684.40 : 343,184.40 = 135,507.06 : x
  2. Step 2: Convert to fraction form
    248,684.40/343,184.40 = 135,507.06/x
  3. Step 3: Cross multiply
    248,684.40x = 343,184.40 × 135,507.06
  4. Step 4: Simplify right side
    248,684.40x = 46,503,909,081.86
  5. Step 5: Solve for x
    x = 46,503,909,081.86/248,684.40
  6. Step 6: Final answer
    x = 186,999.70

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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.