Home / 311,661,670.38-430,105,765.23-172,430,164.50

Finding the Fourth Proportional to 311,661,670.38, 430,105,765.23 and 172,430,164.50

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Solution

The fourth proportional to 311,661,670.38, 430,105,765.23 and 172,430,164.50 is: 237,960,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,661,670.38 : 430,105,765.23 = 172,430,164.50 : x
  2. Step 2: Convert to fraction form
    311,661,670.38/430,105,765.23 = 172,430,164.50/x
  3. Step 3: Cross multiply
    311,661,670.38x = 430,105,765.23 × 172,430,164.50
  4. Step 4: Simplify right side
    311,661,670.38x = 74,163,207,851,007,280
  5. Step 5: Solve for x
    x = 74,163,207,851,007,280/311,661,670.38
  6. Step 6: Final answer
    x = 237,960,631.35

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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.