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Finding the Fourth Proportional to 376,638.60, 519,728.18 and 223,665.24

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Solution

The fourth proportional to 376,638.60, 519,728.18 and 223,665.24 is: 308,638.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,638.60 : 519,728.18 = 223,665.24 : x
  2. Step 2: Convert to fraction form
    376,638.60/519,728.18 = 223,665.24/x
  3. Step 3: Cross multiply
    376,638.60x = 519,728.18 × 223,665.24
  4. Step 4: Simplify right side
    376,638.60x = 116,245,128,114.46
  5. Step 5: Solve for x
    x = 116,245,128,114.46/376,638.60
  6. Step 6: Final answer
    x = 308,638.38

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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.