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Finding the Fourth Proportional to 326,117.94, 489,178.35 and 89,463.30

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Solution

The fourth proportional to 326,117.94, 489,178.35 and 89,463.30 is: 134,195.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,117.94 : 489,178.35 = 89,463.30 : x
  2. Step 2: Convert to fraction form
    326,117.94/489,178.35 = 89,463.30/x
  3. Step 3: Cross multiply
    326,117.94x = 489,178.35 × 89,463.30
  4. Step 4: Simplify right side
    326,117.94x = 43,763,509,479.56
  5. Step 5: Solve for x
    x = 43,763,509,479.56/326,117.94
  6. Step 6: Final answer
    x = 134,195.35

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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.