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Finding the Fourth Proportional to 311,842.12, 430,341.76 and 168,601.82

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Solution

The fourth proportional to 311,842.12, 430,341.76 and 168,601.82 is: 232,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,842.12 : 430,341.76 = 168,601.82 : x
  2. Step 2: Convert to fraction form
    311,842.12/430,341.76 = 168,601.82/x
  3. Step 3: Cross multiply
    311,842.12x = 430,341.76 × 168,601.82
  4. Step 4: Simplify right side
    311,842.12x = 72,556,405,033.86
  5. Step 5: Solve for x
    x = 72,556,405,033.86/311,842.12
  6. Step 6: Final answer
    x = 232,670.32

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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.