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Finding the Fourth Proportional to 341,347.80, 512,021.70 and 215,376.60

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Solution

The fourth proportional to 341,347.80, 512,021.70 and 215,376.60 is: 323,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,347.80 : 512,021.70 = 215,376.60 : x
  2. Step 2: Convert to fraction form
    341,347.80/512,021.70 = 215,376.60/x
  3. Step 3: Cross multiply
    341,347.80x = 512,021.70 × 215,376.60
  4. Step 4: Simplify right side
    341,347.80x = 110,277,492,872.22
  5. Step 5: Solve for x
    x = 110,277,492,872.22/341,347.80
  6. Step 6: Final answer
    x = 323,064.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.