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Finding the Fourth Proportional to 201,916.40, 302,801.70 and 102,043.40

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Solution

The fourth proportional to 201,916.40, 302,801.70 and 102,043.40 is: 153,028.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,916.40 : 302,801.70 = 102,043.40 : x
  2. Step 2: Convert to fraction form
    201,916.40/302,801.70 = 102,043.40/x
  3. Step 3: Cross multiply
    201,916.40x = 302,801.70 × 102,043.40
  4. Step 4: Simplify right side
    201,916.40x = 30,898,914,993.78
  5. Step 5: Solve for x
    x = 30,898,914,993.78/201,916.40
  6. Step 6: Final answer
    x = 153,028.26

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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.