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Finding the Fourth Proportional to 624,342.80, 936,419.16 and 203,618

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Solution

The fourth proportional to 624,342.80, 936,419.16 and 203,618 is: 305,396.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,342.80 : 936,419.16 = 203,618 : x
  2. Step 2: Convert to fraction form
    624,342.80/936,419.16 = 203,618/x
  3. Step 3: Cross multiply
    624,342.80x = 936,419.16 × 203,618
  4. Step 4: Simplify right side
    624,342.80x = 190,671,796,520.88
  5. Step 5: Solve for x
    x = 190,671,796,520.88/624,342.80
  6. Step 6: Final answer
    x = 305,396.00

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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.