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Finding the Fourth Proportional to 228,215.30, 342,371.55 and 70,459.70

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Solution

The fourth proportional to 228,215.30, 342,371.55 and 70,459.70 is: 105,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,215.30 : 342,371.55 = 70,459.70 : x
  2. Step 2: Convert to fraction form
    228,215.30/342,371.55 = 70,459.70/x
  3. Step 3: Cross multiply
    228,215.30x = 342,371.55 × 70,459.70
  4. Step 4: Simplify right side
    228,215.30x = 24,123,396,701.54
  5. Step 5: Solve for x
    x = 24,123,396,701.54/228,215.30
  6. Step 6: Final answer
    x = 105,704.55

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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.