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Finding the Fourth Proportional to 326,510.26, 489,954.46 and 136,953.74

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Solution

The fourth proportional to 326,510.26, 489,954.46 and 136,953.74 is: 205,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,510.26 : 489,954.46 = 136,953.74 : x
  2. Step 2: Convert to fraction form
    326,510.26/489,954.46 = 136,953.74/x
  3. Step 3: Cross multiply
    326,510.26x = 489,954.46 × 136,953.74
  4. Step 4: Simplify right side
    326,510.26x = 67,101,095,726.68
  5. Step 5: Solve for x
    x = 67,101,095,726.68/326,510.26
  6. Step 6: Final answer
    x = 205,509.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.