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Finding the Fourth Proportional to 311,863.32, 430,370.64 and 168,622.92

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Solution

The fourth proportional to 311,863.32, 430,370.64 and 168,622.92 is: 232,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,863.32 : 430,370.64 = 168,622.92 : x
  2. Step 2: Convert to fraction form
    311,863.32/430,370.64 = 168,622.92/x
  3. Step 3: Cross multiply
    311,863.32x = 430,370.64 × 168,622.92
  4. Step 4: Simplify right side
    311,863.32x = 72,570,353,999.07
  5. Step 5: Solve for x
    x = 72,570,353,999.07/311,863.32
  6. Step 6: Final answer
    x = 232,699.23

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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.