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Finding the Fourth Proportional to 368,082.40, 552,123.60 and 210,326.80

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Solution

The fourth proportional to 368,082.40, 552,123.60 and 210,326.80 is: 315,490.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,082.40 : 552,123.60 = 210,326.80 : x
  2. Step 2: Convert to fraction form
    368,082.40/552,123.60 = 210,326.80/x
  3. Step 3: Cross multiply
    368,082.40x = 552,123.60 × 210,326.80
  4. Step 4: Simplify right side
    368,082.40x = 116,126,389,992.48
  5. Step 5: Solve for x
    x = 116,126,389,992.48/368,082.40
  6. Step 6: Final answer
    x = 315,490.20

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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.