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Finding the Fourth Proportional to 223,664.48, 308,674.77 and 128,180.06

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Solution

The fourth proportional to 223,664.48, 308,674.77 and 128,180.06 is: 176,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,664.48 : 308,674.77 = 128,180.06 : x
  2. Step 2: Convert to fraction form
    223,664.48/308,674.77 = 128,180.06/x
  3. Step 3: Cross multiply
    223,664.48x = 308,674.77 × 128,180.06
  4. Step 4: Simplify right side
    223,664.48x = 39,565,950,539.09
  5. Step 5: Solve for x
    x = 39,565,950,539.09/223,664.48
  6. Step 6: Final answer
    x = 176,898.68

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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.