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Finding the Fourth Proportional to 405,640.10, 608,460.15 and 366,932.90

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Solution

The fourth proportional to 405,640.10, 608,460.15 and 366,932.90 is: 550,399.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,640.10 : 608,460.15 = 366,932.90 : x
  2. Step 2: Convert to fraction form
    405,640.10/608,460.15 = 366,932.90/x
  3. Step 3: Cross multiply
    405,640.10x = 608,460.15 × 366,932.90
  4. Step 4: Simplify right side
    405,640.10x = 223,264,047,373.94
  5. Step 5: Solve for x
    x = 223,264,047,373.94/405,640.10
  6. Step 6: Final answer
    x = 550,399.35

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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.