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Finding the Fourth Proportional to 415,192.55, 620,513.82 and 303,108.80

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Solution

The fourth proportional to 415,192.55, 620,513.82 and 303,108.80 is: 453,002.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,192.55 : 620,513.82 = 303,108.80 : x
  2. Step 2: Convert to fraction form
    415,192.55/620,513.82 = 303,108.80/x
  3. Step 3: Cross multiply
    415,192.55x = 620,513.82 × 303,108.80
  4. Step 4: Simplify right side
    415,192.55x = 188,083,196,261.05
  5. Step 5: Solve for x
    x = 188,083,196,261.05/415,192.55
  6. Step 6: Final answer
    x = 453,002.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.