Home / 258,348.34-387,313.40-80,763.94

Finding the Fourth Proportional to 258,348.34, 387,313.40 and 80,763.94

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Solution

The fourth proportional to 258,348.34, 387,313.40 and 80,763.94 is: 121,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,348.34 : 387,313.40 = 80,763.94 : x
  2. Step 2: Convert to fraction form
    258,348.34/387,313.40 = 80,763.94/x
  3. Step 3: Cross multiply
    258,348.34x = 387,313.40 × 80,763.94
  4. Step 4: Simplify right side
    258,348.34x = 31,280,955,794.98
  5. Step 5: Solve for x
    x = 31,280,955,794.98/258,348.34
  6. Step 6: Final answer
    x = 121,080.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.