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Finding the Fourth Proportional to 342,779.56, 513,972.06 and 132,389.80

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Solution

The fourth proportional to 342,779.56, 513,972.06 and 132,389.80 is: 198,508.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,779.56 : 513,972.06 = 132,389.80 : x
  2. Step 2: Convert to fraction form
    342,779.56/513,972.06 = 132,389.80/x
  3. Step 3: Cross multiply
    342,779.56x = 513,972.06 × 132,389.80
  4. Step 4: Simplify right side
    342,779.56x = 68,044,658,228.99
  5. Step 5: Solve for x
    x = 68,044,658,228.99/342,779.56
  6. Step 6: Final answer
    x = 198,508.51

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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.