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Finding the Fourth Proportional to 281,729.71, 388,788.19 and 152,668.46

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Solution

The fourth proportional to 281,729.71, 388,788.19 and 152,668.46 is: 210,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,729.71 : 388,788.19 = 152,668.46 : x
  2. Step 2: Convert to fraction form
    281,729.71/388,788.19 = 152,668.46/x
  3. Step 3: Cross multiply
    281,729.71x = 388,788.19 × 152,668.46
  4. Step 4: Simplify right side
    281,729.71x = 59,355,694,823.79
  5. Step 5: Solve for x
    x = 59,355,694,823.79/281,729.71
  6. Step 6: Final answer
    x = 210,683.12

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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.