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Finding the Fourth Proportional to 476,226.95, 657,201.20 and 261,387

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Solution

The fourth proportional to 476,226.95, 657,201.20 and 261,387 is: 360,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,226.95 : 657,201.20 = 261,387 : x
  2. Step 2: Convert to fraction form
    476,226.95/657,201.20 = 261,387/x
  3. Step 3: Cross multiply
    476,226.95x = 657,201.20 × 261,387
  4. Step 4: Simplify right side
    476,226.95x = 171,783,848,757.47
  5. Step 5: Solve for x
    x = 171,783,848,757.47/476,226.95
  6. Step 6: Final answer
    x = 360,718.46

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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.