Home / 285,235.63-393,610.20-156,149.35

Finding the Fourth Proportional to 285,235.63, 393,610.20 and 156,149.35

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Solution

The fourth proportional to 285,235.63, 393,610.20 and 156,149.35 is: 215,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,235.63 : 393,610.20 = 156,149.35 : x
  2. Step 2: Convert to fraction form
    285,235.63/393,610.20 = 156,149.35/x
  3. Step 3: Cross multiply
    285,235.63x = 393,610.20 × 156,149.35
  4. Step 4: Simplify right side
    285,235.63x = 61,461,976,102.62
  5. Step 5: Solve for x
    x = 61,461,976,102.62/285,235.63
  6. Step 6: Final answer
    x = 215,477.91

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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.