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Finding the Fourth Proportional to 343,670.10, 515,505.15 and 299,383.35

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Solution

The fourth proportional to 343,670.10, 515,505.15 and 299,383.35 is: 449,075.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,670.10 : 515,505.15 = 299,383.35 : x
  2. Step 2: Convert to fraction form
    343,670.10/515,505.15 = 299,383.35/x
  3. Step 3: Cross multiply
    343,670.10x = 515,505.15 × 299,383.35
  4. Step 4: Simplify right side
    343,670.10x = 154,333,658,749.25
  5. Step 5: Solve for x
    x = 154,333,658,749.25/343,670.10
  6. Step 6: Final answer
    x = 449,075.03

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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.