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Finding the Fourth Proportional to 147,328, 221,032.79 and 58,643.78

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Solution

The fourth proportional to 147,328, 221,032.79 and 58,643.78 is: 87,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,328 : 221,032.79 = 58,643.78 : x
  2. Step 2: Convert to fraction form
    147,328/221,032.79 = 58,643.78/x
  3. Step 3: Cross multiply
    147,328x = 221,032.79 × 58,643.78
  4. Step 4: Simplify right side
    147,328x = 12,962,198,309.55
  5. Step 5: Solve for x
    x = 12,962,198,309.55/147,328
  6. Step 6: Final answer
    x = 87,981.91

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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.