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Finding the Fourth Proportional to 421,027.39, 581,026.53 and 230,053.42

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Solution

The fourth proportional to 421,027.39, 581,026.53 and 230,053.42 is: 317,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,027.39 : 581,026.53 = 230,053.42 : x
  2. Step 2: Convert to fraction form
    421,027.39/581,026.53 = 230,053.42/x
  3. Step 3: Cross multiply
    421,027.39x = 581,026.53 × 230,053.42
  4. Step 4: Simplify right side
    421,027.39x = 133,667,140,337.23
  5. Step 5: Solve for x
    x = 133,667,140,337.23/421,027.39
  6. Step 6: Final answer
    x = 317,478.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.