Home / 318,021.18-438,879.75-174,786.30

Finding the Fourth Proportional to 318,021.18, 438,879.75 and 174,786.30

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Solution

The fourth proportional to 318,021.18, 438,879.75 and 174,786.30 is: 241,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,021.18 : 438,879.75 = 174,786.30 : x
  2. Step 2: Convert to fraction form
    318,021.18/438,879.75 = 174,786.30/x
  3. Step 3: Cross multiply
    318,021.18x = 438,879.75 × 174,786.30
  4. Step 4: Simplify right side
    318,021.18x = 76,710,167,647.43
  5. Step 5: Solve for x
    x = 76,710,167,647.43/318,021.18
  6. Step 6: Final answer
    x = 241,210.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.