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Finding the Fourth Proportional to 476,318.88, 657,321.48 and 261,480.96

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Solution

The fourth proportional to 476,318.88, 657,321.48 and 261,480.96 is: 360,844.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,318.88 : 657,321.48 = 261,480.96 : x
  2. Step 2: Convert to fraction form
    476,318.88/657,321.48 = 261,480.96/x
  3. Step 3: Cross multiply
    476,318.88x = 657,321.48 × 261,480.96
  4. Step 4: Simplify right side
    476,318.88x = 171,877,051,619.02
  5. Step 5: Solve for x
    x = 171,877,051,619.02/476,318.88
  6. Step 6: Final answer
    x = 360,844.51

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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.