Home / 266,076,576.40-398,890,915.80-138,425,760.40

Finding the Fourth Proportional to 266,076,576.40, 398,890,915.80 and 138,425,760.40

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Solution

The fourth proportional to 266,076,576.40, 398,890,915.80 and 138,425,760.40 is: 207,522,131.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,076,576.40 : 398,890,915.80 = 138,425,760.40 : x
  2. Step 2: Convert to fraction form
    266,076,576.40/398,890,915.80 = 138,425,760.40/x
  3. Step 3: Cross multiply
    266,076,576.40x = 398,890,915.80 × 138,425,760.40
  4. Step 4: Simplify right side
    266,076,576.40x = 55,216,778,336,267,376
  5. Step 5: Solve for x
    x = 55,216,778,336,267,376/266,076,576.40
  6. Step 6: Final answer
    x = 207,522,131.72

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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.