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Finding the Fourth Proportional to 389,482.53, 584,253.34 and 105,168.94

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Solution

The fourth proportional to 389,482.53, 584,253.34 and 105,168.94 is: 157,761.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,482.53 : 584,253.34 = 105,168.94 : x
  2. Step 2: Convert to fraction form
    389,482.53/584,253.34 = 105,168.94/x
  3. Step 3: Cross multiply
    389,482.53x = 584,253.34 × 105,168.94
  4. Step 4: Simplify right side
    389,482.53x = 61,445,302,735.70
  5. Step 5: Solve for x
    x = 61,445,302,735.70/389,482.53
  6. Step 6: Final answer
    x = 157,761.38

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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.