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Finding the Fourth Proportional to 298,515.84, 447,307.20 and 172,233.60

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Solution

The fourth proportional to 298,515.84, 447,307.20 and 172,233.60 is: 258,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,515.84 : 447,307.20 = 172,233.60 : x
  2. Step 2: Convert to fraction form
    298,515.84/447,307.20 = 172,233.60/x
  3. Step 3: Cross multiply
    298,515.84x = 447,307.20 × 172,233.60
  4. Step 4: Simplify right side
    298,515.84x = 77,041,329,361.92
  5. Step 5: Solve for x
    x = 77,041,329,361.92/298,515.84
  6. Step 6: Final answer
    x = 258,081.21

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1.5x scale

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.