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Finding the Fourth Proportional to 308,181.66, 425,164.05 and 187,303.47

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Solution

The fourth proportional to 308,181.66, 425,164.05 and 187,303.47 is: 258,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,181.66 : 425,164.05 = 187,303.47 : x
  2. Step 2: Convert to fraction form
    308,181.66/425,164.05 = 187,303.47/x
  3. Step 3: Cross multiply
    308,181.66x = 425,164.05 × 187,303.47
  4. Step 4: Simplify right side
    308,181.66x = 79,634,701,884.25
  5. Step 5: Solve for x
    x = 79,634,701,884.25/308,181.66
  6. Step 6: Final answer
    x = 258,401.82

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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.