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Finding the Fourth Proportional to 212,762.82, 317,586.88 and 187,540.90

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Solution

The fourth proportional to 212,762.82, 317,586.88 and 187,540.90 is: 279,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,762.82 : 317,586.88 = 187,540.90 : x
  2. Step 2: Convert to fraction form
    212,762.82/317,586.88 = 187,540.90/x
  3. Step 3: Cross multiply
    212,762.82x = 317,586.88 × 187,540.90
  4. Step 4: Simplify right side
    212,762.82x = 59,560,529,303.39
  5. Step 5: Solve for x
    x = 59,560,529,303.39/212,762.82
  6. Step 6: Final answer
    x = 279,938.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.