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Finding the Fourth Proportional to 171,415.40, 257,123.10 and 167,916.20

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Solution

The fourth proportional to 171,415.40, 257,123.10 and 167,916.20 is: 251,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,415.40 : 257,123.10 = 167,916.20 : x
  2. Step 2: Convert to fraction form
    171,415.40/257,123.10 = 167,916.20/x
  3. Step 3: Cross multiply
    171,415.40x = 257,123.10 × 167,916.20
  4. Step 4: Simplify right side
    171,415.40x = 43,175,133,884.22
  5. Step 5: Solve for x
    x = 43,175,133,884.22/171,415.40
  6. Step 6: Final answer
    x = 251,874.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.