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Finding the Fourth Proportional to 330,688.76, 495,943.02 and 90,745.77

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Solution

The fourth proportional to 330,688.76, 495,943.02 and 90,745.77 is: 136,093.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,688.76 : 495,943.02 = 90,745.77 : x
  2. Step 2: Convert to fraction form
    330,688.76/495,943.02 = 90,745.77/x
  3. Step 3: Cross multiply
    330,688.76x = 495,943.02 × 90,745.77
  4. Step 4: Simplify right side
    330,688.76x = 45,004,731,226.03
  5. Step 5: Solve for x
    x = 45,004,731,226.03/330,688.76
  6. Step 6: Final answer
    x = 136,093.93

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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.