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Finding the Fourth Proportional to 348,431.56, 480,982.68 and 235,407.40

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Solution

The fourth proportional to 348,431.56, 480,982.68 and 235,407.40 is: 324,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,431.56 : 480,982.68 = 235,407.40 : x
  2. Step 2: Convert to fraction form
    348,431.56/480,982.68 = 235,407.40/x
  3. Step 3: Cross multiply
    348,431.56x = 480,982.68 × 235,407.40
  4. Step 4: Simplify right side
    348,431.56x = 113,226,882,143.83
  5. Step 5: Solve for x
    x = 113,226,882,143.83/348,431.56
  6. Step 6: Final answer
    x = 324,961.61

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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.