Home / 543,650.40-815,572.80-228,139.20

Finding the Fourth Proportional to 543,650.40, 815,572.80 and 228,139.20

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Solution

The fourth proportional to 543,650.40, 815,572.80 and 228,139.20 is: 342,249.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,650.40 : 815,572.80 = 228,139.20 : x
  2. Step 2: Convert to fraction form
    543,650.40/815,572.80 = 228,139.20/x
  3. Step 3: Cross multiply
    543,650.40x = 815,572.80 × 228,139.20
  4. Step 4: Simplify right side
    543,650.40x = 186,064,126,133.76
  5. Step 5: Solve for x
    x = 186,064,126,133.76/543,650.40
  6. Step 6: Final answer
    x = 342,249.59

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1.5x scale

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.