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Finding the Fourth Proportional to 201,220.10, 301,830.15 and 130,361.30

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Solution

The fourth proportional to 201,220.10, 301,830.15 and 130,361.30 is: 195,541.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,220.10 : 301,830.15 = 130,361.30 : x
  2. Step 2: Convert to fraction form
    201,220.10/301,830.15 = 130,361.30/x
  3. Step 3: Cross multiply
    201,220.10x = 301,830.15 × 130,361.30
  4. Step 4: Simplify right side
    201,220.10x = 39,346,970,733.20
  5. Step 5: Solve for x
    x = 39,346,970,733.20/201,220.10
  6. Step 6: Final answer
    x = 195,541.95

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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.