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Finding the Fourth Proportional to 476,178.80, 657,134.88 and 261,338.84

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Solution

The fourth proportional to 476,178.80, 657,134.88 and 261,338.84 is: 360,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,178.80 : 657,134.88 = 261,338.84 : x
  2. Step 2: Convert to fraction form
    476,178.80/657,134.88 = 261,338.84/x
  3. Step 3: Cross multiply
    476,178.80x = 657,134.88 × 261,338.84
  4. Step 4: Simplify right side
    476,178.80x = 171,734,867,262.74
  5. Step 5: Solve for x
    x = 171,734,867,262.74/476,178.80
  6. Step 6: Final answer
    x = 360,652.06

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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.