Home / 285,331.02-393,761.22-156,267.12

Finding the Fourth Proportional to 285,331.02, 393,761.22 and 156,267.12

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Solution

The fourth proportional to 285,331.02, 393,761.22 and 156,267.12 is: 215,651.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,331.02 : 393,761.22 = 156,267.12 : x
  2. Step 2: Convert to fraction form
    285,331.02/393,761.22 = 156,267.12/x
  3. Step 3: Cross multiply
    285,331.02x = 393,761.22 × 156,267.12
  4. Step 4: Simplify right side
    285,331.02x = 61,531,931,817.09
  5. Step 5: Solve for x
    x = 61,531,931,817.09/285,331.02
  6. Step 6: Final answer
    x = 215,651.04

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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.