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Finding the Fourth Proportional to 489,818.40, 734,554.80 and 174,285.60

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Solution

The fourth proportional to 489,818.40, 734,554.80 and 174,285.60 is: 261,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,818.40 : 734,554.80 = 174,285.60 : x
  2. Step 2: Convert to fraction form
    489,818.40/734,554.80 = 174,285.60/x
  3. Step 3: Cross multiply
    489,818.40x = 734,554.80 × 174,285.60
  4. Step 4: Simplify right side
    489,818.40x = 128,022,324,050.88
  5. Step 5: Solve for x
    x = 128,022,324,050.88/489,818.40
  6. Step 6: Final answer
    x = 261,366.91

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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.