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Finding the Fourth Proportional to 385,240.80, 577,861.20 and 243,523.20

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Solution

The fourth proportional to 385,240.80, 577,861.20 and 243,523.20 is: 365,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,240.80 : 577,861.20 = 243,523.20 : x
  2. Step 2: Convert to fraction form
    385,240.80/577,861.20 = 243,523.20/x
  3. Step 3: Cross multiply
    385,240.80x = 577,861.20 × 243,523.20
  4. Step 4: Simplify right side
    385,240.80x = 140,722,608,579.84
  5. Step 5: Solve for x
    x = 140,722,608,579.84/385,240.80
  6. Step 6: Final answer
    x = 365,284.80

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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.