Home / 389,108.60-537,089.50-228,015.53

Finding the Fourth Proportional to 389,108.60, 537,089.50 and 228,015.53

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Solution

The fourth proportional to 389,108.60, 537,089.50 and 228,015.53 is: 314,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,108.60 : 537,089.50 = 228,015.53 : x
  2. Step 2: Convert to fraction form
    389,108.60/537,089.50 = 228,015.53/x
  3. Step 3: Cross multiply
    389,108.60x = 537,089.50 × 228,015.53
  4. Step 4: Simplify right side
    389,108.60x = 122,464,746,999.94
  5. Step 5: Solve for x
    x = 122,464,746,999.94/389,108.60
  6. Step 6: Final answer
    x = 314,731.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.