Home / 285,210.20-393,590.16-157,885.79

Finding the Fourth Proportional to 285,210.20, 393,590.16 and 157,885.79

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Solution

The fourth proportional to 285,210.20, 393,590.16 and 157,885.79 is: 217,882.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,210.20 : 393,590.16 = 157,885.79 : x
  2. Step 2: Convert to fraction form
    285,210.20/393,590.16 = 157,885.79/x
  3. Step 3: Cross multiply
    285,210.20x = 393,590.16 × 157,885.79
  4. Step 4: Simplify right side
    285,210.20x = 62,142,291,379.88
  5. Step 5: Solve for x
    x = 62,142,291,379.88/285,210.20
  6. Step 6: Final answer
    x = 217,882.43

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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.