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Finding the Fourth Proportional to 201,220.60, 301,867.35 and 101,128.90

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Solution

The fourth proportional to 201,220.60, 301,867.35 and 101,128.90 is: 151,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,220.60 : 301,867.35 = 101,128.90 : x
  2. Step 2: Convert to fraction form
    201,220.60/301,867.35 = 101,128.90/x
  3. Step 3: Cross multiply
    201,220.60x = 301,867.35 × 101,128.90
  4. Step 4: Simplify right side
    201,220.60x = 30,527,513,051.42
  5. Step 5: Solve for x
    x = 30,527,513,051.42/201,220.60
  6. Step 6: Final answer
    x = 151,711.67

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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.