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Finding the Fourth Proportional to 228,581.40, 342,882.90 and 70,920.30

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Solution

The fourth proportional to 228,581.40, 342,882.90 and 70,920.30 is: 106,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,581.40 : 342,882.90 = 70,920.30 : x
  2. Step 2: Convert to fraction form
    228,581.40/342,882.90 = 70,920.30/x
  3. Step 3: Cross multiply
    228,581.40x = 342,882.90 × 70,920.30
  4. Step 4: Simplify right side
    228,581.40x = 24,317,358,132.87
  5. Step 5: Solve for x
    x = 24,317,358,132.87/228,581.40
  6. Step 6: Final answer
    x = 106,383.80

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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.