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Finding the Fourth Proportional to 421,072.00, 581,080.87 and 230,085.39

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Solution

The fourth proportional to 421,072.00, 581,080.87 and 230,085.39 is: 317,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,072.00 : 581,080.87 = 230,085.39 : x
  2. Step 2: Convert to fraction form
    421,072.00/581,080.87 = 230,085.39/x
  3. Step 3: Cross multiply
    421,072.00x = 581,080.87 × 230,085.39
  4. Step 4: Simplify right side
    421,072.00x = 133,698,218,610.71
  5. Step 5: Solve for x
    x = 133,698,218,610.71/421,072.00
  6. Step 6: Final answer
    x = 317,518.66

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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.