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Finding the Fourth Proportional to 315,647.42, 435,750.55 and 194,855.29

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Solution

The fourth proportional to 315,647.42, 435,750.55 and 194,855.29 is: 268,997.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,647.42 : 435,750.55 = 194,855.29 : x
  2. Step 2: Convert to fraction form
    315,647.42/435,750.55 = 194,855.29/x
  3. Step 3: Cross multiply
    315,647.42x = 435,750.55 × 194,855.29
  4. Step 4: Simplify right side
    315,647.42x = 84,908,298,211.39
  5. Step 5: Solve for x
    x = 84,908,298,211.39/315,647.42
  6. Step 6: Final answer
    x = 268,997.29

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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.