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Finding the Fourth Proportional to 405,679.20, 559,651.04 and 262,485.92

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Solution

The fourth proportional to 405,679.20, 559,651.04 and 262,485.92 is: 362,110.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,679.20 : 559,651.04 = 262,485.92 : x
  2. Step 2: Convert to fraction form
    405,679.20/559,651.04 = 262,485.92/x
  3. Step 3: Cross multiply
    405,679.20x = 559,651.04 × 262,485.92
  4. Step 4: Simplify right side
    405,679.20x = 146,900,518,113.36
  5. Step 5: Solve for x
    x = 146,900,518,113.36/405,679.20
  6. Step 6: Final answer
    x = 362,110.06

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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.