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Finding the Fourth Proportional to 387,383.58, 534,373.61 and 359,983.31

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Solution

The fourth proportional to 387,383.58, 534,373.61 and 359,983.31 is: 496,576.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,383.58 : 534,373.61 = 359,983.31 : x
  2. Step 2: Convert to fraction form
    387,383.58/534,373.61 = 359,983.31/x
  3. Step 3: Cross multiply
    387,383.58x = 534,373.61 × 359,983.31
  4. Step 4: Simplify right side
    387,383.58x = 192,365,576,432.67
  5. Step 5: Solve for x
    x = 192,365,576,432.67/387,383.58
  6. Step 6: Final answer
    x = 496,576.48

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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.