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Finding the Fourth Proportional to 349,930, 524,895 and 87,274

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Solution

The fourth proportional to 349,930, 524,895 and 87,274 is: 130,911

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,930 : 524,895 = 87,274 : x
  2. Step 2: Convert to fraction form
    349,930/524,895 = 87,274/x
  3. Step 3: Cross multiply
    349,930x = 524,895 × 87,274
  4. Step 4: Simplify right side
    349,930x = 45,809,686,230
  5. Step 5: Solve for x
    x = 45,809,686,230/349,930
  6. Step 6: Final answer
    x = 130,911

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.