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Finding the Fourth Proportional to 202,990.60, 304,485.90 and 199,491.40

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Solution

The fourth proportional to 202,990.60, 304,485.90 and 199,491.40 is: 299,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,990.60 : 304,485.90 = 199,491.40 : x
  2. Step 2: Convert to fraction form
    202,990.60/304,485.90 = 199,491.40/x
  3. Step 3: Cross multiply
    202,990.60x = 304,485.90 × 199,491.40
  4. Step 4: Simplify right side
    202,990.60x = 60,742,318,471.26
  5. Step 5: Solve for x
    x = 60,742,318,471.26/202,990.60
  6. Step 6: Final answer
    x = 299,237.10

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1.5x scale

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.