Home / 285,259.38-393,663.95-156,203.29

Finding the Fourth Proportional to 285,259.38, 393,663.95 and 156,203.29

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Solution

The fourth proportional to 285,259.38, 393,663.95 and 156,203.29 is: 215,563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,259.38 : 393,663.95 = 156,203.29 : x
  2. Step 2: Convert to fraction form
    285,259.38/393,663.95 = 156,203.29/x
  3. Step 3: Cross multiply
    285,259.38x = 393,663.95 × 156,203.29
  4. Step 4: Simplify right side
    285,259.38x = 61,491,604,144.40
  5. Step 5: Solve for x
    x = 61,491,604,144.40/285,259.38
  6. Step 6: Final answer
    x = 215,563.83

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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.