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Finding the Fourth Proportional to 470,904.60, 706,745.70 and 218,573.40

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Solution

The fourth proportional to 470,904.60, 706,745.70 and 218,573.40 is: 328,040.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,904.60 : 706,745.70 = 218,573.40 : x
  2. Step 2: Convert to fraction form
    470,904.60/706,745.70 = 218,573.40/x
  3. Step 3: Cross multiply
    470,904.60x = 706,745.70 × 218,573.40
  4. Step 4: Simplify right side
    470,904.60x = 154,475,810,584.38
  5. Step 5: Solve for x
    x = 154,475,810,584.38/470,904.60
  6. Step 6: Final answer
    x = 328,040.56

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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.