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Finding the Fourth Proportional to 201,215.10, 301,822.65 and 130,356.30

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Solution

The fourth proportional to 201,215.10, 301,822.65 and 130,356.30 is: 195,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,215.10 : 301,822.65 = 130,356.30 : x
  2. Step 2: Convert to fraction form
    201,215.10/301,822.65 = 130,356.30/x
  3. Step 3: Cross multiply
    201,215.10x = 301,822.65 × 130,356.30
  4. Step 4: Simplify right side
    201,215.10x = 39,344,483,910.20
  5. Step 5: Solve for x
    x = 39,344,483,910.20/201,215.10
  6. Step 6: Final answer
    x = 195,534.45

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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.