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Finding the Fourth Proportional to 311,842.62, 430,342.45 and 168,602.32

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Solution

The fourth proportional to 311,842.62, 430,342.45 and 168,602.32 is: 232,671.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,842.62 : 430,342.45 = 168,602.32 : x
  2. Step 2: Convert to fraction form
    311,842.62/430,342.45 = 168,602.32/x
  3. Step 3: Cross multiply
    311,842.62x = 430,342.45 × 168,602.32
  4. Step 4: Simplify right side
    311,842.62x = 72,556,736,540.34
  5. Step 5: Solve for x
    x = 72,556,736,540.34/311,842.62
  6. Step 6: Final answer
    x = 232,671.01

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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.