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Finding the Fourth Proportional to 201,106.40, 301,222.20 and 161,740.40

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Solution

The fourth proportional to 201,106.40, 301,222.20 and 161,740.40 is: 242,258.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,106.40 : 301,222.20 = 161,740.40 : x
  2. Step 2: Convert to fraction form
    201,106.40/301,222.20 = 161,740.40/x
  3. Step 3: Cross multiply
    201,106.40x = 301,222.20 × 161,740.40
  4. Step 4: Simplify right side
    201,106.40x = 48,719,799,116.88
  5. Step 5: Solve for x
    x = 48,719,799,116.88/201,106.40
  6. Step 6: Final answer
    x = 242,258.82

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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.