Home / 285,283.78-393,696.45-156,220.18

Finding the Fourth Proportional to 285,283.78, 393,696.45 and 156,220.18

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Solution

The fourth proportional to 285,283.78, 393,696.45 and 156,220.18 is: 215,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,283.78 : 393,696.45 = 156,220.18 : x
  2. Step 2: Convert to fraction form
    285,283.78/393,696.45 = 156,220.18/x
  3. Step 3: Cross multiply
    285,283.78x = 393,696.45 × 156,220.18
  4. Step 4: Simplify right side
    285,283.78x = 61,503,330,284.36
  5. Step 5: Solve for x
    x = 61,503,330,284.36/285,283.78
  6. Step 6: Final answer
    x = 215,586.50

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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.