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Finding the Fourth Proportional to 377,785.50, 521,343.99 and 208,019.22

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Solution

The fourth proportional to 377,785.50, 521,343.99 and 208,019.22 is: 287,066.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,785.50 : 521,343.99 = 208,019.22 : x
  2. Step 2: Convert to fraction form
    377,785.50/521,343.99 = 208,019.22/x
  3. Step 3: Cross multiply
    377,785.50x = 521,343.99 × 208,019.22
  4. Step 4: Simplify right side
    377,785.50x = 108,449,570,151.49
  5. Step 5: Solve for x
    x = 108,449,570,151.49/377,785.50
  6. Step 6: Final answer
    x = 287,066.52

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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.