Home / 285,333.02-393,763.98-156,269.12

Finding the Fourth Proportional to 285,333.02, 393,763.98 and 156,269.12

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Solution

The fourth proportional to 285,333.02, 393,763.98 and 156,269.12 is: 215,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,333.02 : 393,763.98 = 156,269.12 : x
  2. Step 2: Convert to fraction form
    285,333.02/393,763.98 = 156,269.12/x
  3. Step 3: Cross multiply
    285,333.02x = 393,763.98 × 156,269.12
  4. Step 4: Simplify right side
    285,333.02x = 61,533,150,642.30
  5. Step 5: Solve for x
    x = 61,533,150,642.30/285,333.02
  6. Step 6: Final answer
    x = 215,653.80

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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.