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Finding the Fourth Proportional to 311,308.16, 429,627.66 and 173,496.44

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Solution

The fourth proportional to 311,308.16, 429,627.66 and 173,496.44 is: 239,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,308.16 : 429,627.66 = 173,496.44 : x
  2. Step 2: Convert to fraction form
    311,308.16/429,627.66 = 173,496.44/x
  3. Step 3: Cross multiply
    311,308.16x = 429,627.66 × 173,496.44
  4. Step 4: Simplify right side
    311,308.16x = 74,538,870,609.60
  5. Step 5: Solve for x
    x = 74,538,870,609.60/311,308.16
  6. Step 6: Final answer
    x = 239,437.57

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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.