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Finding the Fourth Proportional to 224,404.81, 309,706.02 and 128,911.27

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Solution

The fourth proportional to 224,404.81, 309,706.02 and 128,911.27 is: 177,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,404.81 : 309,706.02 = 128,911.27 : x
  2. Step 2: Convert to fraction form
    224,404.81/309,706.02 = 128,911.27/x
  3. Step 3: Cross multiply
    224,404.81x = 309,706.02 × 128,911.27
  4. Step 4: Simplify right side
    224,404.81x = 39,924,596,364.85
  5. Step 5: Solve for x
    x = 39,924,596,364.85/224,404.81
  6. Step 6: Final answer
    x = 177,913.28

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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.