Home / 315,067.51-434,871.75-187,718.50

Finding the Fourth Proportional to 315,067.51, 434,871.75 and 187,718.50

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Solution

The fourth proportional to 315,067.51, 434,871.75 and 187,718.50 is: 259,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,067.51 : 434,871.75 = 187,718.50 : x
  2. Step 2: Convert to fraction form
    315,067.51/434,871.75 = 187,718.50/x
  3. Step 3: Cross multiply
    315,067.51x = 434,871.75 × 187,718.50
  4. Step 4: Simplify right side
    315,067.51x = 81,633,472,602.38
  5. Step 5: Solve for x
    x = 81,633,472,602.38/315,067.51
  6. Step 6: Final answer
    x = 259,098.35

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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.