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Finding the Fourth Proportional to 368,190.42, 507,980.55 and 300,090.42

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Solution

The fourth proportional to 368,190.42, 507,980.55 and 300,090.42 is: 414,025.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,190.42 : 507,980.55 = 300,090.42 : x
  2. Step 2: Convert to fraction form
    368,190.42/507,980.55 = 300,090.42/x
  3. Step 3: Cross multiply
    368,190.42x = 507,980.55 × 300,090.42
  4. Step 4: Simplify right side
    368,190.42x = 152,440,096,601.33
  5. Step 5: Solve for x
    x = 152,440,096,601.33/368,190.42
  6. Step 6: Final answer
    x = 414,025.16

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1.5x scale

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.