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Finding the Fourth Proportional to 476,143.98, 657,076.86 and 261,287.70

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Solution

The fourth proportional to 476,143.98, 657,076.86 and 261,287.70 is: 360,576.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,143.98 : 657,076.86 = 261,287.70 : x
  2. Step 2: Convert to fraction form
    476,143.98/657,076.86 = 261,287.70/x
  3. Step 3: Cross multiply
    476,143.98x = 657,076.86 × 261,287.70
  4. Step 4: Simplify right side
    476,143.98x = 171,686,101,472.62
  5. Step 5: Solve for x
    x = 171,686,101,472.62/476,143.98
  6. Step 6: Final answer
    x = 360,576.02

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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.