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Finding the Fourth Proportional to 351,880.04, 527,820.66 and 85,640.73

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Solution

The fourth proportional to 351,880.04, 527,820.66 and 85,640.73 is: 128,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,880.04 : 527,820.66 = 85,640.73 : x
  2. Step 2: Convert to fraction form
    351,880.04/527,820.66 = 85,640.73/x
  3. Step 3: Cross multiply
    351,880.04x = 527,820.66 × 85,640.73
  4. Step 4: Simplify right side
    351,880.04x = 45,202,946,631.48
  5. Step 5: Solve for x
    x = 45,202,946,631.48/351,880.04
  6. Step 6: Final answer
    x = 128,461.24

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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.