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Finding the Fourth Proportional to 228,104.53, 342,134.81 and 70,290.61

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Solution

The fourth proportional to 228,104.53, 342,134.81 and 70,290.61 is: 105,429.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,104.53 : 342,134.81 = 70,290.61 : x
  2. Step 2: Convert to fraction form
    228,104.53/342,134.81 = 70,290.61/x
  3. Step 3: Cross multiply
    228,104.53x = 342,134.81 × 70,290.61
  4. Step 4: Simplify right side
    228,104.53x = 24,048,865,264.61
  5. Step 5: Solve for x
    x = 24,048,865,264.61/228,104.53
  6. Step 6: Final answer
    x = 105,429.14

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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.