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Finding the Fourth Proportional to 342,047.76, 513,080.40 and 162,090.96

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Solution

The fourth proportional to 342,047.76, 513,080.40 and 162,090.96 is: 243,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,047.76 : 513,080.40 = 162,090.96 : x
  2. Step 2: Convert to fraction form
    342,047.76/513,080.40 = 162,090.96/x
  3. Step 3: Cross multiply
    342,047.76x = 513,080.40 × 162,090.96
  4. Step 4: Simplify right side
    342,047.76x = 83,165,694,593.18
  5. Step 5: Solve for x
    x = 83,165,694,593.18/342,047.76
  6. Step 6: Final answer
    x = 243,140.59

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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.