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Finding the Fourth Proportional to 342,156.08, 513,201.13 and 105,435.20

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Solution

The fourth proportional to 342,156.08, 513,201.13 and 105,435.20 is: 158,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,156.08 : 513,201.13 = 105,435.20 : x
  2. Step 2: Convert to fraction form
    342,156.08/513,201.13 = 105,435.20/x
  3. Step 3: Cross multiply
    342,156.08x = 513,201.13 × 105,435.20
  4. Step 4: Simplify right side
    342,156.08x = 54,109,463,781.78
  5. Step 5: Solve for x
    x = 54,109,463,781.78/342,156.08
  6. Step 6: Final answer
    x = 158,142.63

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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.