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Finding the Fourth Proportional to 421,671.15, 632,798.33 and 303,427.35

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Solution

The fourth proportional to 421,671.15, 632,798.33 and 303,427.35 is: 455,350.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,671.15 : 632,798.33 = 303,427.35 : x
  2. Step 2: Convert to fraction form
    421,671.15/632,798.33 = 303,427.35/x
  3. Step 3: Cross multiply
    421,671.15x = 632,798.33 × 303,427.35
  4. Step 4: Simplify right side
    421,671.15x = 192,008,318,839.19
  5. Step 5: Solve for x
    x = 192,008,318,839.19/421,671.15
  6. Step 6: Final answer
    x = 455,350.86

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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.