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Finding the Fourth Proportional to 314,676.45, 434,252.21 and 171,436.05

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Solution

The fourth proportional to 314,676.45, 434,252.21 and 171,436.05 is: 236,581.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,676.45 : 434,252.21 = 171,436.05 : x
  2. Step 2: Convert to fraction form
    314,676.45/434,252.21 = 171,436.05/x
  3. Step 3: Cross multiply
    314,676.45x = 434,252.21 × 171,436.05
  4. Step 4: Simplify right side
    314,676.45x = 74,446,482,728.99
  5. Step 5: Solve for x
    x = 74,446,482,728.99/314,676.45
  6. Step 6: Final answer
    x = 236,581.04

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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.