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Finding the Fourth Proportional to 338,648.17, 507,999.90 and 170,081.80

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Solution

The fourth proportional to 338,648.17, 507,999.90 and 170,081.80 is: 255,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,648.17 : 507,999.90 = 170,081.80 : x
  2. Step 2: Convert to fraction form
    338,648.17/507,999.90 = 170,081.80/x
  3. Step 3: Cross multiply
    338,648.17x = 507,999.90 × 170,081.80
  4. Step 4: Simplify right side
    338,648.17x = 86,401,537,391.82
  5. Step 5: Solve for x
    x = 86,401,537,391.82/338,648.17
  6. Step 6: Final answer
    x = 255,136.58

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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.