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Finding the Fourth Proportional to 201,115.10, 301,672.65 and 130,256.30

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Solution

The fourth proportional to 201,115.10, 301,672.65 and 130,256.30 is: 195,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,115.10 : 301,672.65 = 130,256.30 : x
  2. Step 2: Convert to fraction form
    201,115.10/301,672.65 = 130,256.30/x
  3. Step 3: Cross multiply
    201,115.10x = 301,672.65 × 130,256.30
  4. Step 4: Simplify right side
    201,115.10x = 39,294,763,200.20
  5. Step 5: Solve for x
    x = 39,294,763,200.20/201,115.10
  6. Step 6: Final answer
    x = 195,384.45

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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.