Home / 311,661,671.88-430,105,767.30-172,430,166

Finding the Fourth Proportional to 311,661,671.88, 430,105,767.30 and 172,430,166

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Solution

The fourth proportional to 311,661,671.88, 430,105,767.30 and 172,430,166 is: 237,960,633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,661,671.88 : 430,105,767.30 = 172,430,166 : x
  2. Step 2: Convert to fraction form
    311,661,671.88/430,105,767.30 = 172,430,166/x
  3. Step 3: Cross multiply
    311,661,671.88x = 430,105,767.30 × 172,430,166
  4. Step 4: Simplify right side
    311,661,671.88x = 74,163,208,853,096,368
  5. Step 5: Solve for x
    x = 74,163,208,853,096,368/311,661,671.88
  6. Step 6: Final answer
    x = 237,960,633.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.