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Finding the Fourth Proportional to 391,783.50, 587,675.16 and 258,632.58

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Solution

The fourth proportional to 391,783.50, 587,675.16 and 258,632.58 is: 387,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,783.50 : 587,675.16 = 258,632.58 : x
  2. Step 2: Convert to fraction form
    391,783.50/587,675.16 = 258,632.58/x
  3. Step 3: Cross multiply
    391,783.50x = 587,675.16 × 258,632.58
  4. Step 4: Simplify right side
    391,783.50x = 151,991,942,832.71
  5. Step 5: Solve for x
    x = 151,991,942,832.71/391,783.50
  6. Step 6: Final answer
    x = 387,948.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.