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Finding the Fourth Proportional to 427,658.74, 590,187.59 and 236,672.20

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Solution

The fourth proportional to 427,658.74, 590,187.59 and 236,672.20 is: 326,617.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,658.74 : 590,187.59 = 236,672.20 : x
  2. Step 2: Convert to fraction form
    427,658.74/590,187.59 = 236,672.20/x
  3. Step 3: Cross multiply
    427,658.74x = 590,187.59 × 236,672.20
  4. Step 4: Simplify right side
    427,658.74x = 139,680,995,338.00
  5. Step 5: Solve for x
    x = 139,680,995,338.00/427,658.74
  6. Step 6: Final answer
    x = 326,617.89

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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.