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Finding the Fourth Proportional to 525,687.32, 725,448.30 and 283,969.91

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Solution

The fourth proportional to 525,687.32, 725,448.30 and 283,969.91 is: 391,878.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,687.32 : 725,448.30 = 283,969.91 : x
  2. Step 2: Convert to fraction form
    525,687.32/725,448.30 = 283,969.91/x
  3. Step 3: Cross multiply
    525,687.32x = 725,448.30 × 283,969.91
  4. Step 4: Simplify right side
    525,687.32x = 206,005,488,460.65
  5. Step 5: Solve for x
    x = 206,005,488,460.65/525,687.32
  6. Step 6: Final answer
    x = 391,878.37

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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.