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Finding the Fourth Proportional to 354,018.90, 531,028.35 and 228,047.70

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Solution

The fourth proportional to 354,018.90, 531,028.35 and 228,047.70 is: 342,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,018.90 : 531,028.35 = 228,047.70 : x
  2. Step 2: Convert to fraction form
    354,018.90/531,028.35 = 228,047.70/x
  3. Step 3: Cross multiply
    354,018.90x = 531,028.35 × 228,047.70
  4. Step 4: Simplify right side
    354,018.90x = 121,099,793,852.30
  5. Step 5: Solve for x
    x = 121,099,793,852.30/354,018.90
  6. Step 6: Final answer
    x = 342,071.55

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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.