Home / 378,001.56-521,643.06-208,238.52

Finding the Fourth Proportional to 378,001.56, 521,643.06 and 208,238.52

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Solution

The fourth proportional to 378,001.56, 521,643.06 and 208,238.52 is: 287,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,001.56 : 521,643.06 = 208,238.52 : x
  2. Step 2: Convert to fraction form
    378,001.56/521,643.06 = 208,238.52/x
  3. Step 3: Cross multiply
    378,001.56x = 521,643.06 × 208,238.52
  4. Step 4: Simplify right side
    378,001.56x = 108,626,178,782.67
  5. Step 5: Solve for x
    x = 108,626,178,782.67/378,001.56
  6. Step 6: Final answer
    x = 287,369.66

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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.