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Finding the Fourth Proportional to 340,090.40, 510,135.60 and 303,348.80

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Solution

The fourth proportional to 340,090.40, 510,135.60 and 303,348.80 is: 455,023.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,090.40 : 510,135.60 = 303,348.80 : x
  2. Step 2: Convert to fraction form
    340,090.40/510,135.60 = 303,348.80/x
  3. Step 3: Cross multiply
    340,090.40x = 510,135.60 × 303,348.80
  4. Step 4: Simplify right side
    340,090.40x = 154,749,022,097.28
  5. Step 5: Solve for x
    x = 154,749,022,097.28/340,090.40
  6. Step 6: Final answer
    x = 455,023.20

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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.