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Finding the Fourth Proportional to 389,775, 584,662.50 and 94,287

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Solution

The fourth proportional to 389,775, 584,662.50 and 94,287 is: 141,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,775 : 584,662.50 = 94,287 : x
  2. Step 2: Convert to fraction form
    389,775/584,662.50 = 94,287/x
  3. Step 3: Cross multiply
    389,775x = 584,662.50 × 94,287
  4. Step 4: Simplify right side
    389,775x = 55,126,073,137.50
  5. Step 5: Solve for x
    x = 55,126,073,137.50/389,775
  6. Step 6: Final answer
    x = 141,430.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.