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Finding the Fourth Proportional to 389,936, 584,907.20 and 94,448

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Solution

The fourth proportional to 389,936, 584,907.20 and 94,448 is: 141,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,936 : 584,907.20 = 94,448 : x
  2. Step 2: Convert to fraction form
    389,936/584,907.20 = 94,448/x
  3. Step 3: Cross multiply
    389,936x = 584,907.20 × 94,448
  4. Step 4: Simplify right side
    389,936x = 55,243,315,225.60
  5. Step 5: Solve for x
    x = 55,243,315,225.60/389,936
  6. Step 6: Final answer
    x = 141,672.78

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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.