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Finding the Fourth Proportional to 405,880.80, 560,050.08 and 254,870.88

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Solution

The fourth proportional to 405,880.80, 560,050.08 and 254,870.88 is: 351,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,880.80 : 560,050.08 = 254,870.88 : x
  2. Step 2: Convert to fraction form
    405,880.80/560,050.08 = 254,870.88/x
  3. Step 3: Cross multiply
    405,880.80x = 560,050.08 × 254,870.88
  4. Step 4: Simplify right side
    405,880.80x = 142,740,456,733.67
  5. Step 5: Solve for x
    x = 142,740,456,733.67/405,880.80
  6. Step 6: Final answer
    x = 351,680.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.