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Finding the Fourth Proportional to 369,778.86, 509,832.09 and 308,613.33

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Solution

The fourth proportional to 369,778.86, 509,832.09 and 308,613.33 is: 425,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,778.86 : 509,832.09 = 308,613.33 : x
  2. Step 2: Convert to fraction form
    369,778.86/509,832.09 = 308,613.33/x
  3. Step 3: Cross multiply
    369,778.86x = 509,832.09 × 308,613.33
  4. Step 4: Simplify right side
    369,778.86x = 157,340,979,035.76
  5. Step 5: Solve for x
    x = 157,340,979,035.76/369,778.86
  6. Step 6: Final answer
    x = 425,500.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.