Home / 256,588.20-385,271.10-197,490.60

Finding the Fourth Proportional to 256,588.20, 385,271.10 and 197,490.60

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Solution

The fourth proportional to 256,588.20, 385,271.10 and 197,490.60 is: 296,535.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,588.20 : 385,271.10 = 197,490.60 : x
  2. Step 2: Convert to fraction form
    256,588.20/385,271.10 = 197,490.60/x
  3. Step 3: Cross multiply
    256,588.20x = 385,271.10 × 197,490.60
  4. Step 4: Simplify right side
    256,588.20x = 76,087,420,701.66
  5. Step 5: Solve for x
    x = 76,087,420,701.66/256,588.20
  6. Step 6: Final answer
    x = 296,535.15

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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.