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Finding the Fourth Proportional to 347,362.79, 479,360.64 and 188,386.79

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Solution

The fourth proportional to 347,362.79, 479,360.64 and 188,386.79 is: 259,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,362.79 : 479,360.64 = 188,386.79 : x
  2. Step 2: Convert to fraction form
    347,362.79/479,360.64 = 188,386.79/x
  3. Step 3: Cross multiply
    347,362.79x = 479,360.64 × 188,386.79
  4. Step 4: Simplify right side
    347,362.79x = 90,305,209,825.14
  5. Step 5: Solve for x
    x = 90,305,209,825.14/347,362.79
  6. Step 6: Final answer
    x = 259,973.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.