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Finding the Fourth Proportional to 202,914.20, 304,371.30 and 139,928.60

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Solution

The fourth proportional to 202,914.20, 304,371.30 and 139,928.60 is: 209,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,914.20 : 304,371.30 = 139,928.60 : x
  2. Step 2: Convert to fraction form
    202,914.20/304,371.30 = 139,928.60/x
  3. Step 3: Cross multiply
    202,914.20x = 304,371.30 × 139,928.60
  4. Step 4: Simplify right side
    202,914.20x = 42,590,249,889.18
  5. Step 5: Solve for x
    x = 42,590,249,889.18/202,914.20
  6. Step 6: Final answer
    x = 209,892.90

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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.