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Finding the Fourth Proportional to 255,648.45, 352,821.11 and 153,707.12

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Solution

The fourth proportional to 255,648.45, 352,821.11 and 153,707.12 is: 212,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,648.45 : 352,821.11 = 153,707.12 : x
  2. Step 2: Convert to fraction form
    255,648.45/352,821.11 = 153,707.12/x
  3. Step 3: Cross multiply
    255,648.45x = 352,821.11 × 153,707.12
  4. Step 4: Simplify right side
    255,648.45x = 54,231,114,160.66
  5. Step 5: Solve for x
    x = 54,231,114,160.66/255,648.45
  6. Step 6: Final answer
    x = 212,131.60

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1.5x scale

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.