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Finding the Fourth Proportional to 329,864.91, 455,211.68 and 178,958.67

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Solution

The fourth proportional to 329,864.91, 455,211.68 and 178,958.67 is: 246,961.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,864.91 : 455,211.68 = 178,958.67 : x
  2. Step 2: Convert to fraction form
    329,864.91/455,211.68 = 178,958.67/x
  3. Step 3: Cross multiply
    329,864.91x = 455,211.68 × 178,958.67
  4. Step 4: Simplify right side
    329,864.91x = 81,464,075,926.47
  5. Step 5: Solve for x
    x = 81,464,075,926.47/329,864.91
  6. Step 6: Final answer
    x = 246,961.93

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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.