Home / 389,240.09-537,139.15-228,202.40

Finding the Fourth Proportional to 389,240.09, 537,139.15 and 228,202.40

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Solution

The fourth proportional to 389,240.09, 537,139.15 and 228,202.40 is: 314,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,240.09 : 537,139.15 = 228,202.40 : x
  2. Step 2: Convert to fraction form
    389,240.09/537,139.15 = 228,202.40/x
  3. Step 3: Cross multiply
    389,240.09x = 537,139.15 × 228,202.40
  4. Step 4: Simplify right side
    389,240.09x = 122,576,440,914.89
  5. Step 5: Solve for x
    x = 122,576,440,914.89/389,240.09
  6. Step 6: Final answer
    x = 314,912.17

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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.