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Finding the Fourth Proportional to 261,461.74, 392,194.34 and 71,942.13

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Solution

The fourth proportional to 261,461.74, 392,194.34 and 71,942.13 is: 107,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,461.74 : 392,194.34 = 71,942.13 : x
  2. Step 2: Convert to fraction form
    261,461.74/392,194.34 = 71,942.13/x
  3. Step 3: Cross multiply
    261,461.74x = 392,194.34 × 71,942.13
  4. Step 4: Simplify right side
    261,461.74x = 28,215,296,193.54
  5. Step 5: Solve for x
    x = 28,215,296,193.54/261,461.74
  6. Step 6: Final answer
    x = 107,913.67

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1.5x scale

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.