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Finding the Fourth Proportional to 380,614.73, 570,921.89 and 355,392.07

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Solution

The fourth proportional to 380,614.73, 570,921.89 and 355,392.07 is: 533,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,614.73 : 570,921.89 = 355,392.07 : x
  2. Step 2: Convert to fraction form
    380,614.73/570,921.89 = 355,392.07/x
  3. Step 3: Cross multiply
    380,614.73x = 570,921.89 × 355,392.07
  4. Step 4: Simplify right side
    380,614.73x = 202,901,107,663.84
  5. Step 5: Solve for x
    x = 202,901,107,663.84/380,614.73
  6. Step 6: Final answer
    x = 533,087.90

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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.