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Finding the Fourth Proportional to 343,175.40, 515,054.70 and 276,690.60

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Solution

The fourth proportional to 343,175.40, 515,054.70 and 276,690.60 is: 415,271.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,175.40 : 515,054.70 = 276,690.60 : x
  2. Step 2: Convert to fraction form
    343,175.40/515,054.70 = 276,690.60/x
  3. Step 3: Cross multiply
    343,175.40x = 515,054.70 × 276,690.60
  4. Step 4: Simplify right side
    343,175.40x = 142,510,793,975.82
  5. Step 5: Solve for x
    x = 142,510,793,975.82/343,175.40
  6. Step 6: Final answer
    x = 415,271.01

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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.