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Finding the Fourth Proportional to 235,668.84, 325,217.66 and 128,239.16

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Solution

The fourth proportional to 235,668.84, 325,217.66 and 128,239.16 is: 176,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,668.84 : 325,217.66 = 128,239.16 : x
  2. Step 2: Convert to fraction form
    235,668.84/325,217.66 = 128,239.16/x
  3. Step 3: Cross multiply
    235,668.84x = 325,217.66 × 128,239.16
  4. Step 4: Simplify right side
    235,668.84x = 41,705,639,535.57
  5. Step 5: Solve for x
    x = 41,705,639,535.57/235,668.84
  6. Step 6: Final answer
    x = 176,967.14

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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.