Home / 389,769.67-537,883.95-210,921.67

Finding the Fourth Proportional to 389,769.67, 537,883.95 and 210,921.67

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Solution

The fourth proportional to 389,769.67, 537,883.95 and 210,921.67 is: 291,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,769.67 : 537,883.95 = 210,921.67 : x
  2. Step 2: Convert to fraction form
    389,769.67/537,883.95 = 210,921.67/x
  3. Step 3: Cross multiply
    389,769.67x = 537,883.95 × 210,921.67
  4. Step 4: Simplify right side
    389,769.67x = 113,451,381,000.20
  5. Step 5: Solve for x
    x = 113,451,381,000.20/389,769.67
  6. Step 6: Final answer
    x = 291,072.88

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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.