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Finding the Fourth Proportional to 420,640.01, 629,954.14 and 242,607.27

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Solution

The fourth proportional to 420,640.01, 629,954.14 and 242,607.27 is: 363,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,640.01 : 629,954.14 = 242,607.27 : x
  2. Step 2: Convert to fraction form
    420,640.01/629,954.14 = 242,607.27/x
  3. Step 3: Cross multiply
    420,640.01x = 629,954.14 × 242,607.27
  4. Step 4: Simplify right side
    420,640.01x = 152,831,454,130.60
  5. Step 5: Solve for x
    x = 152,831,454,130.60/420,640.01
  6. Step 6: Final answer
    x = 363,330.76

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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.