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Finding the Fourth Proportional to 361,407.40, 542,111.10 and 303,670.60

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Solution

The fourth proportional to 361,407.40, 542,111.10 and 303,670.60 is: 455,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,407.40 : 542,111.10 = 303,670.60 : x
  2. Step 2: Convert to fraction form
    361,407.40/542,111.10 = 303,670.60/x
  3. Step 3: Cross multiply
    361,407.40x = 542,111.10 × 303,670.60
  4. Step 4: Simplify right side
    361,407.40x = 164,623,203,003.66
  5. Step 5: Solve for x
    x = 164,623,203,003.66/361,407.40
  6. Step 6: Final answer
    x = 455,505.90

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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.