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Finding the Fourth Proportional to 212,380.32, 318,618 and 62,618.88

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Solution

The fourth proportional to 212,380.32, 318,618 and 62,618.88 is: 93,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,380.32 : 318,618 = 62,618.88 : x
  2. Step 2: Convert to fraction form
    212,380.32/318,618 = 62,618.88/x
  3. Step 3: Cross multiply
    212,380.32x = 318,618 × 62,618.88
  4. Step 4: Simplify right side
    212,380.32x = 19,951,502,307.84
  5. Step 5: Solve for x
    x = 19,951,502,307.84/212,380.32
  6. Step 6: Final answer
    x = 93,942.33

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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.