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Finding the Fourth Proportional to 266,915.70, 400,373.55 and 89,404.20

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Solution

The fourth proportional to 266,915.70, 400,373.55 and 89,404.20 is: 134,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,915.70 : 400,373.55 = 89,404.20 : x
  2. Step 2: Convert to fraction form
    266,915.70/400,373.55 = 89,404.20/x
  3. Step 3: Cross multiply
    266,915.70x = 400,373.55 × 89,404.20
  4. Step 4: Simplify right side
    266,915.70x = 35,795,076,938.91
  5. Step 5: Solve for x
    x = 35,795,076,938.91/266,915.70
  6. Step 6: Final answer
    x = 134,106.30

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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.