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Finding the Fourth Proportional to 421,710.44, 581,968.81 and 230,727.93

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Solution

The fourth proportional to 421,710.44, 581,968.81 and 230,727.93 is: 318,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,710.44 : 581,968.81 = 230,727.93 : x
  2. Step 2: Convert to fraction form
    421,710.44/581,968.81 = 230,727.93/x
  3. Step 3: Cross multiply
    421,710.44x = 581,968.81 × 230,727.93
  4. Step 4: Simplify right side
    421,710.44x = 134,276,458,855.86
  5. Step 5: Solve for x
    x = 134,276,458,855.86/421,710.44
  6. Step 6: Final answer
    x = 318,409.14

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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.