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Finding the Fourth Proportional to 488,987.75, 675,024.03 and 307,965.65

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Solution

The fourth proportional to 488,987.75, 675,024.03 and 307,965.65 is: 425,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,987.75 : 675,024.03 = 307,965.65 : x
  2. Step 2: Convert to fraction form
    488,987.75/675,024.03 = 307,965.65/x
  3. Step 3: Cross multiply
    488,987.75x = 675,024.03 × 307,965.65
  4. Step 4: Simplify right side
    488,987.75x = 207,884,210,789.45
  5. Step 5: Solve for x
    x = 207,884,210,789.45/488,987.75
  6. Step 6: Final answer
    x = 425,131.73

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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.