Home / 378,058.19-521,720.01-208,292.31

Finding the Fourth Proportional to 378,058.19, 521,720.01 and 208,292.31

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Solution

The fourth proportional to 378,058.19, 521,720.01 and 208,292.31 is: 287,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,058.19 : 521,720.01 = 208,292.31 : x
  2. Step 2: Convert to fraction form
    378,058.19/521,720.01 = 208,292.31/x
  3. Step 3: Cross multiply
    378,058.19x = 521,720.01 × 208,292.31
  4. Step 4: Simplify right side
    378,058.19x = 108,670,266,641.95
  5. Step 5: Solve for x
    x = 108,670,266,641.95/378,058.19
  6. Step 6: Final answer
    x = 287,443.23

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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.