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Finding the Fourth Proportional to 343,399.20, 515,090.70 and 94,081.20

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Solution

The fourth proportional to 343,399.20, 515,090.70 and 94,081.20 is: 141,119.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,399.20 : 515,090.70 = 94,081.20 : x
  2. Step 2: Convert to fraction form
    343,399.20/515,090.70 = 94,081.20/x
  3. Step 3: Cross multiply
    343,399.20x = 515,090.70 × 94,081.20
  4. Step 4: Simplify right side
    343,399.20x = 48,460,351,164.84
  5. Step 5: Solve for x
    x = 48,460,351,164.84/343,399.20
  6. Step 6: Final answer
    x = 141,119.58

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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.