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Finding the Fourth Proportional to 340,147.80, 509,897.70 and 126,858.60

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Solution

The fourth proportional to 340,147.80, 509,897.70 and 126,858.60 is: 190,167.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,147.80 : 509,897.70 = 126,858.60 : x
  2. Step 2: Convert to fraction form
    340,147.80/509,897.70 = 126,858.60/x
  3. Step 3: Cross multiply
    340,147.80x = 509,897.70 × 126,858.60
  4. Step 4: Simplify right side
    340,147.80x = 64,684,908,365.22
  5. Step 5: Solve for x
    x = 64,684,908,365.22/340,147.80
  6. Step 6: Final answer
    x = 190,167.06

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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.