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Finding the Fourth Proportional to 311,978.88, 467,968.32 and 101,616.84

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Solution

The fourth proportional to 311,978.88, 467,968.32 and 101,616.84 is: 152,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,978.88 : 467,968.32 = 101,616.84 : x
  2. Step 2: Convert to fraction form
    311,978.88/467,968.32 = 101,616.84/x
  3. Step 3: Cross multiply
    311,978.88x = 467,968.32 × 101,616.84
  4. Step 4: Simplify right side
    311,978.88x = 47,553,461,898.51
  5. Step 5: Solve for x
    x = 47,553,461,898.51/311,978.88
  6. Step 6: Final answer
    x = 152,425.26

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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.