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Finding the Fourth Proportional to 318,570.40, 477,929.44 and 108,208.48

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Solution

The fourth proportional to 318,570.40, 477,929.44 and 108,208.48 is: 162,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,570.40 : 477,929.44 = 108,208.48 : x
  2. Step 2: Convert to fraction form
    318,570.40/477,929.44 = 108,208.48/x
  3. Step 3: Cross multiply
    318,570.40x = 477,929.44 × 108,208.48
  4. Step 4: Simplify right side
    318,570.40x = 51,716,018,249.65
  5. Step 5: Solve for x
    x = 51,716,018,249.65/318,570.40
  6. Step 6: Final answer
    x = 162,337.80

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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.