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Finding the Fourth Proportional to 201,303.20, 301,954.80 and 131,319.20

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Solution

The fourth proportional to 201,303.20, 301,954.80 and 131,319.20 is: 196,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,303.20 : 301,954.80 = 131,319.20 : x
  2. Step 2: Convert to fraction form
    201,303.20/301,954.80 = 131,319.20/x
  3. Step 3: Cross multiply
    201,303.20x = 301,954.80 × 131,319.20
  4. Step 4: Simplify right side
    201,303.20x = 39,652,462,772.16
  5. Step 5: Solve for x
    x = 39,652,462,772.16/201,303.20
  6. Step 6: Final answer
    x = 196,978.80

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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.