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Finding the Fourth Proportional to 223,741.13, 308,776.54 and 128,262.18

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Solution

The fourth proportional to 223,741.13, 308,776.54 and 128,262.18 is: 177,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,741.13 : 308,776.54 = 128,262.18 : x
  2. Step 2: Convert to fraction form
    223,741.13/308,776.54 = 128,262.18/x
  3. Step 3: Cross multiply
    223,741.13x = 308,776.54 × 128,262.18
  4. Step 4: Simplify right side
    223,741.13x = 39,604,352,153.26
  5. Step 5: Solve for x
    x = 39,604,352,153.26/223,741.13
  6. Step 6: Final answer
    x = 177,009.71

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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.