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Finding the Fourth Proportional to 173,043.40, 259,346.40 and 154,235.20

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Solution

The fourth proportional to 173,043.40, 259,346.40 and 154,235.20 is: 231,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,043.40 : 259,346.40 = 154,235.20 : x
  2. Step 2: Convert to fraction form
    173,043.40/259,346.40 = 154,235.20/x
  3. Step 3: Cross multiply
    173,043.40x = 259,346.40 × 154,235.20
  4. Step 4: Simplify right side
    173,043.40x = 40,000,343,873.28
  5. Step 5: Solve for x
    x = 40,000,343,873.28/173,043.40
  6. Step 6: Final answer
    x = 231,157.87

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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.