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Finding the Fourth Proportional to 201,218.10, 301,827.15 and 130,359.30

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Solution

The fourth proportional to 201,218.10, 301,827.15 and 130,359.30 is: 195,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,218.10 : 301,827.15 = 130,359.30 : x
  2. Step 2: Convert to fraction form
    201,218.10/301,827.15 = 130,359.30/x
  3. Step 3: Cross multiply
    201,218.10x = 301,827.15 × 130,359.30
  4. Step 4: Simplify right side
    201,218.10x = 39,345,975,995.00
  5. Step 5: Solve for x
    x = 39,345,975,995.00/201,218.10
  6. Step 6: Final answer
    x = 195,538.95

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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.