Home / 389,243.07-537,143.20-228,205.35

Finding the Fourth Proportional to 389,243.07, 537,143.20 and 228,205.35

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Solution

The fourth proportional to 389,243.07, 537,143.20 and 228,205.35 is: 314,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,243.07 : 537,143.20 = 228,205.35 : x
  2. Step 2: Convert to fraction form
    389,243.07/537,143.20 = 228,205.35/x
  3. Step 3: Cross multiply
    389,243.07x = 537,143.20 × 228,205.35
  4. Step 4: Simplify right side
    389,243.07x = 122,578,951,385.61
  5. Step 5: Solve for x
    x = 122,578,951,385.61/389,243.07
  6. Step 6: Final answer
    x = 314,916.21

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1.5x scale

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.