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Finding the Fourth Proportional to 228,604.52, 315,479.32 and 130,485.78

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Solution

The fourth proportional to 228,604.52, 315,479.32 and 130,485.78 is: 180,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,604.52 : 315,479.32 = 130,485.78 : x
  2. Step 2: Convert to fraction form
    228,604.52/315,479.32 = 130,485.78/x
  3. Step 3: Cross multiply
    228,604.52x = 315,479.32 × 130,485.78
  4. Step 4: Simplify right side
    228,604.52x = 41,165,564,817.86
  5. Step 5: Solve for x
    x = 41,165,564,817.86/228,604.52
  6. Step 6: Final answer
    x = 180,073.27

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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.