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Finding the Fourth Proportional to 272,978.76, 376,666.36 and 158,235

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Solution

The fourth proportional to 272,978.76, 376,666.36 and 158,235 is: 218,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,978.76 : 376,666.36 = 158,235 : x
  2. Step 2: Convert to fraction form
    272,978.76/376,666.36 = 158,235/x
  3. Step 3: Cross multiply
    272,978.76x = 376,666.36 × 158,235
  4. Step 4: Simplify right side
    272,978.76x = 59,601,801,474.60
  5. Step 5: Solve for x
    x = 59,601,801,474.60/272,978.76
  6. Step 6: Final answer
    x = 218,338.60

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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.