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Finding the Fourth Proportional to 389,900.57, 584,906.63 and 120,051.53

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Solution

The fourth proportional to 389,900.57, 584,906.63 and 120,051.53 is: 180,094.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,900.57 : 584,906.63 = 120,051.53 : x
  2. Step 2: Convert to fraction form
    389,900.57/584,906.63 = 120,051.53/x
  3. Step 3: Cross multiply
    389,900.57x = 584,906.63 × 120,051.53
  4. Step 4: Simplify right side
    389,900.57x = 70,218,937,601.04
  5. Step 5: Solve for x
    x = 70,218,937,601.04/389,900.57
  6. Step 6: Final answer
    x = 180,094.48

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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.