Home / 378,001.06-521,642.37-208,238.02

Finding the Fourth Proportional to 378,001.06, 521,642.37 and 208,238.02

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Solution

The fourth proportional to 378,001.06, 521,642.37 and 208,238.02 is: 287,368.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,001.06 : 521,642.37 = 208,238.02 : x
  2. Step 2: Convert to fraction form
    378,001.06/521,642.37 = 208,238.02/x
  3. Step 3: Cross multiply
    378,001.06x = 521,642.37 × 208,238.02
  4. Step 4: Simplify right side
    378,001.06x = 108,625,774,276.91
  5. Step 5: Solve for x
    x = 108,625,774,276.91/378,001.06
  6. Step 6: Final answer
    x = 287,368.97

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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.