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Finding the Fourth Proportional to 476,145.60, 657,048.78 and 261,299.44

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Solution

The fourth proportional to 476,145.60, 657,048.78 and 261,299.44 is: 360,575.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,145.60 : 657,048.78 = 261,299.44 : x
  2. Step 2: Convert to fraction form
    476,145.60/657,048.78 = 261,299.44/x
  3. Step 3: Cross multiply
    476,145.60x = 657,048.78 × 261,299.44
  4. Step 4: Simplify right side
    476,145.60x = 171,686,478,266.68
  5. Step 5: Solve for x
    x = 171,686,478,266.68/476,145.60
  6. Step 6: Final answer
    x = 360,575.59

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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.