Home / 285,356.32-393,777.67-156,295.36

Finding the Fourth Proportional to 285,356.32, 393,777.67 and 156,295.36

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Solution

The fourth proportional to 285,356.32, 393,777.67 and 156,295.36 is: 215,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,356.32 : 393,777.67 = 156,295.36 : x
  2. Step 2: Convert to fraction form
    285,356.32/393,777.67 = 156,295.36/x
  3. Step 3: Cross multiply
    285,356.32x = 393,777.67 × 156,295.36
  4. Step 4: Simplify right side
    285,356.32x = 61,545,620,872.15
  5. Step 5: Solve for x
    x = 61,545,620,872.15/285,356.32
  6. Step 6: Final answer
    x = 215,679.90

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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.