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Finding the Fourth Proportional to 228,608.35, 315,411.27 and 147,908.05

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Solution

The fourth proportional to 228,608.35, 315,411.27 and 147,908.05 is: 204,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,608.35 : 315,411.27 = 147,908.05 : x
  2. Step 2: Convert to fraction form
    228,608.35/315,411.27 = 147,908.05/x
  3. Step 3: Cross multiply
    228,608.35x = 315,411.27 × 147,908.05
  4. Step 4: Simplify right side
    228,608.35x = 46,651,865,893.72
  5. Step 5: Solve for x
    x = 46,651,865,893.72/228,608.35
  6. Step 6: Final answer
    x = 204,068.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.