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Finding the Fourth Proportional to 318,885.64, 440,062.13 and 175,645.69

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Solution

The fourth proportional to 318,885.64, 440,062.13 and 175,645.69 is: 242,391.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,885.64 : 440,062.13 = 175,645.69 : x
  2. Step 2: Convert to fraction form
    318,885.64/440,062.13 = 175,645.69/x
  3. Step 3: Cross multiply
    318,885.64x = 440,062.13 × 175,645.69
  4. Step 4: Simplify right side
    318,885.64x = 77,295,015,805.68
  5. Step 5: Solve for x
    x = 77,295,015,805.68/318,885.64
  6. Step 6: Final answer
    x = 242,391.02

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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.