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Finding the Fourth Proportional to 342,395, 513,594.12 and 120,779

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Solution

The fourth proportional to 342,395, 513,594.12 and 120,779 is: 181,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,395 : 513,594.12 = 120,779 : x
  2. Step 2: Convert to fraction form
    342,395/513,594.12 = 120,779/x
  3. Step 3: Cross multiply
    342,395x = 513,594.12 × 120,779
  4. Step 4: Simplify right side
    342,395x = 62,031,384,219.48
  5. Step 5: Solve for x
    x = 62,031,384,219.48/342,395
  6. Step 6: Final answer
    x = 181,169.07

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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.