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Finding the Fourth Proportional to 189,791.70, 284,590.81 and 63,386.47

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Solution

The fourth proportional to 189,791.70, 284,590.81 and 63,386.47 is: 95,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,791.70 : 284,590.81 = 63,386.47 : x
  2. Step 2: Convert to fraction form
    189,791.70/284,590.81 = 63,386.47/x
  3. Step 3: Cross multiply
    189,791.70x = 284,590.81 × 63,386.47
  4. Step 4: Simplify right side
    189,791.70x = 18,039,206,840.34
  5. Step 5: Solve for x
    x = 18,039,206,840.34/189,791.70
  6. Step 6: Final answer
    x = 95,047.40

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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.