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Finding the Fourth Proportional to 255,636.45, 352,804.68 and 153,695.25

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Solution

The fourth proportional to 255,636.45, 352,804.68 and 153,695.25 is: 212,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,636.45 : 352,804.68 = 153,695.25 : x
  2. Step 2: Convert to fraction form
    255,636.45/352,804.68 = 153,695.25/x
  3. Step 3: Cross multiply
    255,636.45x = 352,804.68 × 153,695.25
  4. Step 4: Simplify right side
    255,636.45x = 54,224,403,493.77
  5. Step 5: Solve for x
    x = 54,224,403,493.77/255,636.45
  6. Step 6: Final answer
    x = 212,115.30

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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.