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Finding the Fourth Proportional to 338,290.72, 507,372.59 and 169,765.81

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Solution

The fourth proportional to 338,290.72, 507,372.59 and 169,765.81 is: 254,616.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,290.72 : 507,372.59 = 169,765.81 : x
  2. Step 2: Convert to fraction form
    338,290.72/507,372.59 = 169,765.81/x
  3. Step 3: Cross multiply
    338,290.72x = 507,372.59 × 169,765.81
  4. Step 4: Simplify right side
    338,290.72x = 86,134,518,713.15
  5. Step 5: Solve for x
    x = 86,134,518,713.15/338,290.72
  6. Step 6: Final answer
    x = 254,616.85

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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.