Home / 245,709.34-339,120.21-142,328.50

Finding the Fourth Proportional to 245,709.34, 339,120.21 and 142,328.50

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Solution

The fourth proportional to 245,709.34, 339,120.21 and 142,328.50 is: 196,437.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,709.34 : 339,120.21 = 142,328.50 : x
  2. Step 2: Convert to fraction form
    245,709.34/339,120.21 = 142,328.50/x
  3. Step 3: Cross multiply
    245,709.34x = 339,120.21 × 142,328.50
  4. Step 4: Simplify right side
    245,709.34x = 48,266,470,808.99
  5. Step 5: Solve for x
    x = 48,266,470,808.99/245,709.34
  6. Step 6: Final answer
    x = 196,437.27

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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.