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Finding the Fourth Proportional to 345,383.34, 515,646.52 and 263,903.93

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Solution

The fourth proportional to 345,383.34, 515,646.52 and 263,903.93 is: 394,000.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,383.34 : 515,646.52 = 263,903.93 : x
  2. Step 2: Convert to fraction form
    345,383.34/515,646.52 = 263,903.93/x
  3. Step 3: Cross multiply
    345,383.34x = 515,646.52 × 263,903.93
  4. Step 4: Simplify right side
    345,383.34x = 136,081,141,814.51
  5. Step 5: Solve for x
    x = 136,081,141,814.51/345,383.34
  6. Step 6: Final answer
    x = 394,000.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.