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Finding the Fourth Proportional to 238,081.65, 328,558.07 and 130,658.49

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Solution

The fourth proportional to 238,081.65, 328,558.07 and 130,658.49 is: 180,311.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,081.65 : 328,558.07 = 130,658.49 : x
  2. Step 2: Convert to fraction form
    238,081.65/328,558.07 = 130,658.49/x
  3. Step 3: Cross multiply
    238,081.65x = 328,558.07 × 130,658.49
  4. Step 4: Simplify right side
    238,081.65x = 42,928,900,650.22
  5. Step 5: Solve for x
    x = 42,928,900,650.22/238,081.65
  6. Step 6: Final answer
    x = 180,311.67

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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.