Home / 353,123.75-529,519.78-128,325.67

Finding the Fourth Proportional to 353,123.75, 529,519.78 and 128,325.67

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Solution

The fourth proportional to 353,123.75, 529,519.78 and 128,325.67 is: 192,428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,123.75 : 529,519.78 = 128,325.67 : x
  2. Step 2: Convert to fraction form
    353,123.75/529,519.78 = 128,325.67/x
  3. Step 3: Cross multiply
    353,123.75x = 529,519.78 × 128,325.67
  4. Step 4: Simplify right side
    353,123.75x = 67,950,979,383.36
  5. Step 5: Solve for x
    x = 67,950,979,383.36/353,123.75
  6. Step 6: Final answer
    x = 192,428.23

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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.