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Finding the Fourth Proportional to 617,034.51, 851,505.21 and 345,101.31

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Solution

The fourth proportional to 617,034.51, 851,505.21 and 345,101.31 is: 476,238.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,034.51 : 851,505.21 = 345,101.31 : x
  2. Step 2: Convert to fraction form
    617,034.51/851,505.21 = 345,101.31/x
  3. Step 3: Cross multiply
    617,034.51x = 851,505.21 × 345,101.31
  4. Step 4: Simplify right side
    617,034.51x = 293,855,563,442.83
  5. Step 5: Solve for x
    x = 293,855,563,442.83/617,034.51
  6. Step 6: Final answer
    x = 476,238.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.