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Finding the Fourth Proportional to 235,707.84, 325,270.59 and 128,275.58

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Solution

The fourth proportional to 235,707.84, 325,270.59 and 128,275.58 is: 177,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,707.84 : 325,270.59 = 128,275.58 : x
  2. Step 2: Convert to fraction form
    235,707.84/325,270.59 = 128,275.58/x
  3. Step 3: Cross multiply
    235,707.84x = 325,270.59 × 128,275.58
  4. Step 4: Simplify right side
    235,707.84x = 41,724,271,481.81
  5. Step 5: Solve for x
    x = 41,724,271,481.81/235,707.84
  6. Step 6: Final answer
    x = 177,016.90

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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.