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Finding the Fourth Proportional to 394,365.60, 591,985.80 and 306,010.80

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Solution

The fourth proportional to 394,365.60, 591,985.80 and 306,010.80 is: 459,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,365.60 : 591,985.80 = 306,010.80 : x
  2. Step 2: Convert to fraction form
    394,365.60/591,985.80 = 306,010.80/x
  3. Step 3: Cross multiply
    394,365.60x = 591,985.80 × 306,010.80
  4. Step 4: Simplify right side
    394,365.60x = 181,154,048,246.64
  5. Step 5: Solve for x
    x = 181,154,048,246.64/394,365.60
  6. Step 6: Final answer
    x = 459,355.60

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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.