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Finding the Fourth Proportional to 553,861.44, 830,903.52 and 198,903.36

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Solution

The fourth proportional to 553,861.44, 830,903.52 and 198,903.36 is: 298,395.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,861.44 : 830,903.52 = 198,903.36 : x
  2. Step 2: Convert to fraction form
    553,861.44/830,903.52 = 198,903.36/x
  3. Step 3: Cross multiply
    553,861.44x = 830,903.52 × 198,903.36
  4. Step 4: Simplify right side
    553,861.44x = 165,269,501,963.83
  5. Step 5: Solve for x
    x = 165,269,501,963.83/553,861.44
  6. Step 6: Final answer
    x = 298,395.03

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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.