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Finding the Fourth Proportional to 437,354.21, 603,751.42 and 308,397.75

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Solution

The fourth proportional to 437,354.21, 603,751.42 and 308,397.75 is: 425,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,354.21 : 603,751.42 = 308,397.75 : x
  2. Step 2: Convert to fraction form
    437,354.21/603,751.42 = 308,397.75/x
  3. Step 3: Cross multiply
    437,354.21x = 603,751.42 × 308,397.75
  4. Step 4: Simplify right side
    437,354.21x = 186,195,582,702.89
  5. Step 5: Solve for x
    x = 186,195,582,702.89/437,354.21
  6. Step 6: Final answer
    x = 425,731.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.