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Finding the Fourth Proportional to 420,073.89, 629,903.47 and 183,314.13

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Solution

The fourth proportional to 420,073.89, 629,903.47 and 183,314.13 is: 274,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,073.89 : 629,903.47 = 183,314.13 : x
  2. Step 2: Convert to fraction form
    420,073.89/629,903.47 = 183,314.13/x
  3. Step 3: Cross multiply
    420,073.89x = 629,903.47 × 183,314.13
  4. Step 4: Simplify right side
    420,073.89x = 115,470,204,110.32
  5. Step 5: Solve for x
    x = 115,470,204,110.32/420,073.89
  6. Step 6: Final answer
    x = 274,880.70

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1.5x scale

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.