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Finding the Fourth Proportional to 309,173.42, 426,658.37 and 171,361.13

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Solution

The fourth proportional to 309,173.42, 426,658.37 and 171,361.13 is: 236,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,173.42 : 426,658.37 = 171,361.13 : x
  2. Step 2: Convert to fraction form
    309,173.42/426,658.37 = 171,361.13/x
  3. Step 3: Cross multiply
    309,173.42x = 426,658.37 × 171,361.13
  4. Step 4: Simplify right side
    309,173.42x = 73,112,657,417.06
  5. Step 5: Solve for x
    x = 73,112,657,417.06/309,173.42
  6. Step 6: Final answer
    x = 236,477.83

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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.