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Finding the Fourth Proportional to 628,840.40, 943,187.70 and 179,630.60

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Solution

The fourth proportional to 628,840.40, 943,187.70 and 179,630.60 is: 269,425.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,840.40 : 943,187.70 = 179,630.60 : x
  2. Step 2: Convert to fraction form
    628,840.40/943,187.70 = 179,630.60/x
  3. Step 3: Cross multiply
    628,840.40x = 943,187.70 × 179,630.60
  4. Step 4: Simplify right side
    628,840.40x = 169,425,372,463.62
  5. Step 5: Solve for x
    x = 169,425,372,463.62/628,840.40
  6. Step 6: Final answer
    x = 269,425.08

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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.