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Finding the Fourth Proportional to 620,361.64, 930,033.89 and 220,774.87

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Solution

The fourth proportional to 620,361.64, 930,033.89 and 220,774.87 is: 330,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,361.64 : 930,033.89 = 220,774.87 : x
  2. Step 2: Convert to fraction form
    620,361.64/930,033.89 = 220,774.87/x
  3. Step 3: Cross multiply
    620,361.64x = 930,033.89 × 220,774.87
  4. Step 4: Simplify right side
    620,361.64x = 205,328,111,160.34
  5. Step 5: Solve for x
    x = 205,328,111,160.34/620,361.64
  6. Step 6: Final answer
    x = 330,981.31

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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.