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Finding the Fourth Proportional to 437,355.21, 603,752.80 and 308,398.75

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Solution

The fourth proportional to 437,355.21, 603,752.80 and 308,398.75 is: 425,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,355.21 : 603,752.80 = 308,398.75 : x
  2. Step 2: Convert to fraction form
    437,355.21/603,752.80 = 308,398.75/x
  3. Step 3: Cross multiply
    437,355.21x = 603,752.80 × 308,398.75
  4. Step 4: Simplify right side
    437,355.21x = 186,196,608,829
  5. Step 5: Solve for x
    x = 186,196,608,829/437,355.21
  6. Step 6: Final answer
    x = 425,733.14

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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.