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Finding the Fourth Proportional to 224,512.70, 309,880.71 and 129,074.84

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Solution

The fourth proportional to 224,512.70, 309,880.71 and 129,074.84 is: 178,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,512.70 : 309,880.71 = 129,074.84 : x
  2. Step 2: Convert to fraction form
    224,512.70/309,880.71 = 129,074.84/x
  3. Step 3: Cross multiply
    224,512.70x = 309,880.71 × 129,074.84
  4. Step 4: Simplify right side
    224,512.70x = 39,997,803,062.34
  5. Step 5: Solve for x
    x = 39,997,803,062.34/224,512.70
  6. Step 6: Final answer
    x = 178,153.86

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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.