Home / 285,261.39-393,666.72-156,205.29

Finding the Fourth Proportional to 285,261.39, 393,666.72 and 156,205.29

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Solution

The fourth proportional to 285,261.39, 393,666.72 and 156,205.29 is: 215,566.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,261.39 : 393,666.72 = 156,205.29 : x
  2. Step 2: Convert to fraction form
    285,261.39/393,666.72 = 156,205.29/x
  3. Step 3: Cross multiply
    285,261.39x = 393,666.72 × 156,205.29
  4. Step 4: Simplify right side
    285,261.39x = 61,492,824,160.95
  5. Step 5: Solve for x
    x = 61,492,824,160.95/285,261.39
  6. Step 6: Final answer
    x = 215,566.59

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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.