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Finding the Fourth Proportional to 342,421.70, 513,632.55 and 202,108.10

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Solution

The fourth proportional to 342,421.70, 513,632.55 and 202,108.10 is: 303,162.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,421.70 : 513,632.55 = 202,108.10 : x
  2. Step 2: Convert to fraction form
    342,421.70/513,632.55 = 202,108.10/x
  3. Step 3: Cross multiply
    342,421.70x = 513,632.55 × 202,108.10
  4. Step 4: Simplify right side
    342,421.70x = 103,809,298,778.66
  5. Step 5: Solve for x
    x = 103,809,298,778.66/342,421.70
  6. Step 6: Final answer
    x = 303,162.15

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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.