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Finding the Fourth Proportional to 311,363.62, 429,532.65 and 299,292.58

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Solution

The fourth proportional to 311,363.62, 429,532.65 and 299,292.58 is: 412,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,363.62 : 429,532.65 = 299,292.58 : x
  2. Step 2: Convert to fraction form
    311,363.62/429,532.65 = 299,292.58/x
  3. Step 3: Cross multiply
    311,363.62x = 429,532.65 × 299,292.58
  4. Step 4: Simplify right side
    311,363.62x = 128,555,935,012.74
  5. Step 5: Solve for x
    x = 128,555,935,012.74/311,363.62
  6. Step 6: Final answer
    x = 412,880.40

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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.