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Finding the Fourth Proportional to 421,670.04, 581,930.46 and 242,879.64

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Solution

The fourth proportional to 421,670.04, 581,930.46 and 242,879.64 is: 335,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,670.04 : 581,930.46 = 242,879.64 : x
  2. Step 2: Convert to fraction form
    421,670.04/581,930.46 = 242,879.64/x
  3. Step 3: Cross multiply
    421,670.04x = 581,930.46 × 242,879.64
  4. Step 4: Simplify right side
    421,670.04x = 141,339,060,629.83
  5. Step 5: Solve for x
    x = 141,339,060,629.83/421,670.04
  6. Step 6: Final answer
    x = 335,188.77

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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.