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Finding the Fourth Proportional to 330,376.41, 495,564.93 and 90,472.77

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Solution

The fourth proportional to 330,376.41, 495,564.93 and 90,472.77 is: 135,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,376.41 : 495,564.93 = 90,472.77 : x
  2. Step 2: Convert to fraction form
    330,376.41/495,564.93 = 90,472.77/x
  3. Step 3: Cross multiply
    330,376.41x = 495,564.93 × 90,472.77
  4. Step 4: Simplify right side
    330,376.41x = 44,835,131,931.96
  5. Step 5: Solve for x
    x = 44,835,131,931.96/330,376.41
  6. Step 6: Final answer
    x = 135,709.24

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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.