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Finding the Fourth Proportional to 338,668.50, 507,937.65 and 170,143.68

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Solution

The fourth proportional to 338,668.50, 507,937.65 and 170,143.68 is: 255,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,668.50 : 507,937.65 = 170,143.68 : x
  2. Step 2: Convert to fraction form
    338,668.50/507,937.65 = 170,143.68/x
  3. Step 3: Cross multiply
    338,668.50x = 507,937.65 × 170,143.68
  4. Step 4: Simplify right side
    338,668.50x = 86,422,380,981.55
  5. Step 5: Solve for x
    x = 86,422,380,981.55/338,668.50
  6. Step 6: Final answer
    x = 255,182.81

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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.