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Finding the Fourth Proportional to 318,885.33, 440,061.70 and 175,645.37

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Solution

The fourth proportional to 318,885.33, 440,061.70 and 175,645.37 is: 242,390.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,885.33 : 440,061.70 = 175,645.37 : x
  2. Step 2: Convert to fraction form
    318,885.33/440,061.70 = 175,645.37/x
  3. Step 3: Cross multiply
    318,885.33x = 440,061.70 × 175,645.37
  4. Step 4: Simplify right side
    318,885.33x = 77,294,800,119.33
  5. Step 5: Solve for x
    x = 77,294,800,119.33/318,885.33
  6. Step 6: Final answer
    x = 242,390.58

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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.