Home / 268,857.10-403,285.65-257,047.30

Finding the Fourth Proportional to 268,857.10, 403,285.65 and 257,047.30

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Solution

The fourth proportional to 268,857.10, 403,285.65 and 257,047.30 is: 385,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,857.10 : 403,285.65 = 257,047.30 : x
  2. Step 2: Convert to fraction form
    268,857.10/403,285.65 = 257,047.30/x
  3. Step 3: Cross multiply
    268,857.10x = 403,285.65 × 257,047.30
  4. Step 4: Simplify right side
    268,857.10x = 103,663,487,461.25
  5. Step 5: Solve for x
    x = 103,663,487,461.25/268,857.10
  6. Step 6: Final answer
    x = 385,570.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.