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Finding the Fourth Proportional to 356,543.40, 492,043.56 and 203,606.52

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Solution

The fourth proportional to 356,543.40, 492,043.56 and 203,606.52 is: 280,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,543.40 : 492,043.56 = 203,606.52 : x
  2. Step 2: Convert to fraction form
    356,543.40/492,043.56 = 203,606.52/x
  3. Step 3: Cross multiply
    356,543.40x = 492,043.56 × 203,606.52
  4. Step 4: Simplify right side
    356,543.40x = 100,183,276,940.01
  5. Step 5: Solve for x
    x = 100,183,276,940.01/356,543.40
  6. Step 6: Final answer
    x = 280,984.80

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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.