Home / 356,278.16-491,541.82-203,205.78

Finding the Fourth Proportional to 356,278.16, 491,541.82 and 203,205.78

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Solution

The fourth proportional to 356,278.16, 491,541.82 and 203,205.78 is: 280,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,278.16 : 491,541.82 = 203,205.78 : x
  2. Step 2: Convert to fraction form
    356,278.16/491,541.82 = 203,205.78/x
  3. Step 3: Cross multiply
    356,278.16x = 491,541.82 × 203,205.78
  4. Step 4: Simplify right side
    356,278.16x = 99,884,138,427.71
  5. Step 5: Solve for x
    x = 99,884,138,427.71/356,278.16
  6. Step 6: Final answer
    x = 280,354.37

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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.