Home / 318,153.10-439,046.55-172,954.06

Finding the Fourth Proportional to 318,153.10, 439,046.55 and 172,954.06

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Solution

The fourth proportional to 318,153.10, 439,046.55 and 172,954.06 is: 238,674.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,153.10 : 439,046.55 = 172,954.06 : x
  2. Step 2: Convert to fraction form
    318,153.10/439,046.55 = 172,954.06/x
  3. Step 3: Cross multiply
    318,153.10x = 439,046.55 × 172,954.06
  4. Step 4: Simplify right side
    318,153.10x = 75,934,883,351.49
  5. Step 5: Solve for x
    x = 75,934,883,351.49/318,153.10
  6. Step 6: Final answer
    x = 238,674.03

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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.