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Finding the Fourth Proportional to 376,445.40, 519,266.40 and 223,382.76

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Solution

The fourth proportional to 376,445.40, 519,266.40 and 223,382.76 is: 308,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,445.40 : 519,266.40 = 223,382.76 : x
  2. Step 2: Convert to fraction form
    376,445.40/519,266.40 = 223,382.76/x
  3. Step 3: Cross multiply
    376,445.40x = 519,266.40 × 223,382.76
  4. Step 4: Simplify right side
    376,445.40x = 115,995,161,607.26
  5. Step 5: Solve for x
    x = 115,995,161,607.26/376,445.40
  6. Step 6: Final answer
    x = 308,132.76

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Double scale
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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.