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Finding the Fourth Proportional to 271,885.74, 407,836.98 and 129,746.40

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Solution

The fourth proportional to 271,885.74, 407,836.98 and 129,746.40 is: 194,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,885.74 : 407,836.98 = 129,746.40 : x
  2. Step 2: Convert to fraction form
    271,885.74/407,836.98 = 129,746.40/x
  3. Step 3: Cross multiply
    271,885.74x = 407,836.98 × 129,746.40
  4. Step 4: Simplify right side
    271,885.74x = 52,915,379,941.87
  5. Step 5: Solve for x
    x = 52,915,379,941.87/271,885.74
  6. Step 6: Final answer
    x = 194,623.59

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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.