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Finding the Fourth Proportional to 342,324.40, 513,486.60 and 155,335.90

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Solution

The fourth proportional to 342,324.40, 513,486.60 and 155,335.90 is: 233,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,324.40 : 513,486.60 = 155,335.90 : x
  2. Step 2: Convert to fraction form
    342,324.40/513,486.60 = 155,335.90/x
  3. Step 3: Cross multiply
    342,324.40x = 513,486.60 × 155,335.90
  4. Step 4: Simplify right side
    342,324.40x = 79,762,903,148.94
  5. Step 5: Solve for x
    x = 79,762,903,148.94/342,324.40
  6. Step 6: Final answer
    x = 233,003.85

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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.