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Finding the Fourth Proportional to 624,315.20, 936,602.40 and 203,622.80

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Solution

The fourth proportional to 624,315.20, 936,602.40 and 203,622.80 is: 305,476.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,315.20 : 936,602.40 = 203,622.80 : x
  2. Step 2: Convert to fraction form
    624,315.20/936,602.40 = 203,622.80/x
  3. Step 3: Cross multiply
    624,315.20x = 936,602.40 × 203,622.80
  4. Step 4: Simplify right side
    624,315.20x = 190,713,603,174.72
  5. Step 5: Solve for x
    x = 190,713,603,174.72/624,315.20
  6. Step 6: Final answer
    x = 305,476.47

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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.