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Finding the Fourth Proportional to 300,981.92, 415,211.94 and 180,098.87

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Solution

The fourth proportional to 300,981.92, 415,211.94 and 180,098.87 is: 248,450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,981.92 : 415,211.94 = 180,098.87 : x
  2. Step 2: Convert to fraction form
    300,981.92/415,211.94 = 180,098.87/x
  3. Step 3: Cross multiply
    300,981.92x = 415,211.94 × 180,098.87
  4. Step 4: Simplify right side
    300,981.92x = 74,779,199,128.45
  5. Step 5: Solve for x
    x = 74,779,199,128.45/300,981.92
  6. Step 6: Final answer
    x = 248,450.81

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1.5x scale

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.