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Finding the Fourth Proportional to 255,620.20, 352,782.12 and 153,678.88

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Solution

The fourth proportional to 255,620.20, 352,782.12 and 153,678.88 is: 212,092.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,620.20 : 352,782.12 = 153,678.88 : x
  2. Step 2: Convert to fraction form
    255,620.20/352,782.12 = 153,678.88/x
  3. Step 3: Cross multiply
    255,620.20x = 352,782.12 × 153,678.88
  4. Step 4: Simplify right side
    255,620.20x = 54,215,161,085.63
  5. Step 5: Solve for x
    x = 54,215,161,085.63/255,620.20
  6. Step 6: Final answer
    x = 212,092.63

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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.