Home / 285,265.72-393,665.32-154,443.45

Finding the Fourth Proportional to 285,265.72, 393,665.32 and 154,443.45

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Solution

The fourth proportional to 285,265.72, 393,665.32 and 154,443.45 is: 213,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,265.72 : 393,665.32 = 154,443.45 : x
  2. Step 2: Convert to fraction form
    285,265.72/393,665.32 = 154,443.45/x
  3. Step 3: Cross multiply
    285,265.72x = 393,665.32 × 154,443.45
  4. Step 4: Simplify right side
    285,265.72x = 60,799,030,166.15
  5. Step 5: Solve for x
    x = 60,799,030,166.15/285,265.72
  6. Step 6: Final answer
    x = 213,131.22

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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.