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Finding the Fourth Proportional to 235,999.43, 325,677.93 and 128,569.20

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Solution

The fourth proportional to 235,999.43, 325,677.93 and 128,569.20 is: 177,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,999.43 : 325,677.93 = 128,569.20 : x
  2. Step 2: Convert to fraction form
    235,999.43/325,677.93 = 128,569.20/x
  3. Step 3: Cross multiply
    235,999.43x = 325,677.93 × 128,569.20
  4. Step 4: Simplify right side
    235,999.43x = 41,872,150,917.76
  5. Step 5: Solve for x
    x = 41,872,150,917.76/235,999.43
  6. Step 6: Final answer
    x = 177,424.80

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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.