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Finding the Fourth Proportional to 349,658.21, 525,486.87 and 325,964.90

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Solution

The fourth proportional to 349,658.21, 525,486.87 and 325,964.90 is: 489,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,658.21 : 525,486.87 = 325,964.90 : x
  2. Step 2: Convert to fraction form
    349,658.21/525,486.87 = 325,964.90/x
  3. Step 3: Cross multiply
    349,658.21x = 525,486.87 × 325,964.90
  4. Step 4: Simplify right side
    349,658.21x = 171,290,272,403.43
  5. Step 5: Solve for x
    x = 171,290,272,403.43/349,658.21
  6. Step 6: Final answer
    x = 489,879.17

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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.