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Finding the Fourth Proportional to 329,256.45, 493,873.65 and 139,594.77

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Solution

The fourth proportional to 329,256.45, 493,873.65 and 139,594.77 is: 209,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,256.45 : 493,873.65 = 139,594.77 : x
  2. Step 2: Convert to fraction form
    329,256.45/493,873.65 = 139,594.77/x
  3. Step 3: Cross multiply
    329,256.45x = 493,873.65 × 139,594.77
  4. Step 4: Simplify right side
    329,256.45x = 68,942,178,580.81
  5. Step 5: Solve for x
    x = 68,942,178,580.81/329,256.45
  6. Step 6: Final answer
    x = 209,387.48

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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.