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Finding the Fourth Proportional to 201,905.40, 302,814.90 and 89,585.40

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Solution

The fourth proportional to 201,905.40, 302,814.90 and 89,585.40 is: 134,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,905.40 : 302,814.90 = 89,585.40 : x
  2. Step 2: Convert to fraction form
    201,905.40/302,814.90 = 89,585.40/x
  3. Step 3: Cross multiply
    201,905.40x = 302,814.90 × 89,585.40
  4. Step 4: Simplify right side
    201,905.40x = 27,127,793,942.46
  5. Step 5: Solve for x
    x = 27,127,793,942.46/201,905.40
  6. Step 6: Final answer
    x = 134,358.93

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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.