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Finding the Fourth Proportional to 449,980.27, 621,036.18 and 275,654.50

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Solution

The fourth proportional to 449,980.27, 621,036.18 and 275,654.50 is: 380,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,980.27 : 621,036.18 = 275,654.50 : x
  2. Step 2: Convert to fraction form
    449,980.27/621,036.18 = 275,654.50/x
  3. Step 3: Cross multiply
    449,980.27x = 621,036.18 × 275,654.50
  4. Step 4: Simplify right side
    449,980.27x = 171,191,417,679.81
  5. Step 5: Solve for x
    x = 171,191,417,679.81/449,980.27
  6. Step 6: Final answer
    x = 380,442.05

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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.