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Finding the Fourth Proportional to 309,197.34, 426,776.31 and 181,913.94

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Solution

The fourth proportional to 309,197.34, 426,776.31 and 181,913.94 is: 251,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,197.34 : 426,776.31 = 181,913.94 : x
  2. Step 2: Convert to fraction form
    309,197.34/426,776.31 = 181,913.94/x
  3. Step 3: Cross multiply
    309,197.34x = 426,776.31 × 181,913.94
  4. Step 4: Simplify right side
    309,197.34x = 77,636,560,050.76
  5. Step 5: Solve for x
    x = 77,636,560,050.76/309,197.34
  6. Step 6: Final answer
    x = 251,090.65

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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.