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Finding the Fourth Proportional to 628,708.60, 943,062.90 and 229,216.60

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Solution

The fourth proportional to 628,708.60, 943,062.90 and 229,216.60 is: 343,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,708.60 : 943,062.90 = 229,216.60 : x
  2. Step 2: Convert to fraction form
    628,708.60/943,062.90 = 229,216.60/x
  3. Step 3: Cross multiply
    628,708.60x = 943,062.90 × 229,216.60
  4. Step 4: Simplify right side
    628,708.60x = 216,165,671,524.14
  5. Step 5: Solve for x
    x = 216,165,671,524.14/628,708.60
  6. Step 6: Final answer
    x = 343,824.90

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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.