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Finding the Fourth Proportional to 372,015.90, 558,153.45 and 161,804.70

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Solution

The fourth proportional to 372,015.90, 558,153.45 and 161,804.70 is: 242,763.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,015.90 : 558,153.45 = 161,804.70 : x
  2. Step 2: Convert to fraction form
    372,015.90/558,153.45 = 161,804.70/x
  3. Step 3: Cross multiply
    372,015.90x = 558,153.45 × 161,804.70
  4. Step 4: Simplify right side
    372,015.90x = 90,311,851,531.22
  5. Step 5: Solve for x
    x = 90,311,851,531.22/372,015.90
  6. Step 6: Final answer
    x = 242,763.42

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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.