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Finding the Fourth Proportional to 427,647.54, 590,139 and 236,668.98

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Solution

The fourth proportional to 427,647.54, 590,139 and 236,668.98 is: 326,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,647.54 : 590,139 = 236,668.98 : x
  2. Step 2: Convert to fraction form
    427,647.54/590,139 = 236,668.98/x
  3. Step 3: Cross multiply
    427,647.54x = 590,139 × 236,668.98
  4. Step 4: Simplify right side
    427,647.54x = 139,667,595,188.22
  5. Step 5: Solve for x
    x = 139,667,595,188.22/427,647.54
  6. Step 6: Final answer
    x = 326,595.11

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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.