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Finding the Fourth Proportional to 402,927.20, 603,661.80 and 192,100.40

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Solution

The fourth proportional to 402,927.20, 603,661.80 and 192,100.40 is: 287,803.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,927.20 : 603,661.80 = 192,100.40 : x
  2. Step 2: Convert to fraction form
    402,927.20/603,661.80 = 192,100.40/x
  3. Step 3: Cross multiply
    402,927.20x = 603,661.80 × 192,100.40
  4. Step 4: Simplify right side
    402,927.20x = 115,963,673,244.72
  5. Step 5: Solve for x
    x = 115,963,673,244.72/402,927.20
  6. Step 6: Final answer
    x = 287,803.04

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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.