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Finding the Fourth Proportional to 299,725.42, 447,401.57 and 261,890.98

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Solution

The fourth proportional to 299,725.42, 447,401.57 and 261,890.98 is: 390,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,725.42 : 447,401.57 = 261,890.98 : x
  2. Step 2: Convert to fraction form
    299,725.42/447,401.57 = 261,890.98/x
  3. Step 3: Cross multiply
    299,725.42x = 447,401.57 × 261,890.98
  4. Step 4: Simplify right side
    299,725.42x = 117,170,435,620.84
  5. Step 5: Solve for x
    x = 117,170,435,620.84/299,725.42
  6. Step 6: Final answer
    x = 390,925.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.