Home / 285,279.22-393,690.16-156,215.62

Finding the Fourth Proportional to 285,279.22, 393,690.16 and 156,215.62

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Solution

The fourth proportional to 285,279.22, 393,690.16 and 156,215.62 is: 215,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,279.22 : 393,690.16 = 156,215.62 : x
  2. Step 2: Convert to fraction form
    285,279.22/393,690.16 = 156,215.62/x
  3. Step 3: Cross multiply
    285,279.22x = 393,690.16 × 156,215.62
  4. Step 4: Simplify right side
    285,279.22x = 61,500,551,651.22
  5. Step 5: Solve for x
    x = 61,500,551,651.22/285,279.22
  6. Step 6: Final answer
    x = 215,580.20

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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.