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Finding the Fourth Proportional to 308,158.58, 425,389.77 and 187,338.44

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Solution

The fourth proportional to 308,158.58, 425,389.77 and 187,338.44 is: 258,606.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,158.58 : 425,389.77 = 187,338.44 : x
  2. Step 2: Convert to fraction form
    308,158.58/425,389.77 = 187,338.44/x
  3. Step 3: Cross multiply
    308,158.58x = 425,389.77 × 187,338.44
  4. Step 4: Simplify right side
    308,158.58x = 79,691,856,967.23
  5. Step 5: Solve for x
    x = 79,691,856,967.23/308,158.58
  6. Step 6: Final answer
    x = 258,606.64

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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.