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Finding the Fourth Proportional to 311,785,061.10, 437,215,721.70 and 311,785,061.10

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Solution

The fourth proportional to 311,785,061.10, 437,215,721.70 and 311,785,061.10 is: 437,215,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,785,061.10 : 437,215,721.70 = 311,785,061.10 : x
  2. Step 2: Convert to fraction form
    311,785,061.10/437,215,721.70 = 311,785,061.10/x
  3. Step 3: Cross multiply
    311,785,061.10x = 437,215,721.70 × 311,785,061.10
  4. Step 4: Simplify right side
    311,785,061.10x = 136,317,330,504,115,104
  5. Step 5: Solve for x
    x = 136,317,330,504,115,104/311,785,061.10
  6. Step 6: Final answer
    x = 437,215,721.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.