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Finding the Fourth Proportional to 439,293.12, 606,060 and 258,010.80

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Solution

The fourth proportional to 439,293.12, 606,060 and 258,010.80 is: 355,958.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,293.12 : 606,060 = 258,010.80 : x
  2. Step 2: Convert to fraction form
    439,293.12/606,060 = 258,010.80/x
  3. Step 3: Cross multiply
    439,293.12x = 606,060 × 258,010.80
  4. Step 4: Simplify right side
    439,293.12x = 156,370,025,448
  5. Step 5: Solve for x
    x = 156,370,025,448/439,293.12
  6. Step 6: Final answer
    x = 355,958.28

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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.