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Finding the Fourth Proportional to 371,082.29, 511,777.10 and 285,249.22

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Solution

The fourth proportional to 371,082.29, 511,777.10 and 285,249.22 is: 393,400.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,082.29 : 511,777.10 = 285,249.22 : x
  2. Step 2: Convert to fraction form
    371,082.29/511,777.10 = 285,249.22/x
  3. Step 3: Cross multiply
    371,082.29x = 511,777.10 × 285,249.22
  4. Step 4: Simplify right side
    371,082.29x = 145,984,018,258.52
  5. Step 5: Solve for x
    x = 145,984,018,258.52/371,082.29
  6. Step 6: Final answer
    x = 393,400.66

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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.