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Finding the Fourth Proportional to 385,311.60, 578,057.64 and 160,818.80

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Solution

The fourth proportional to 385,311.60, 578,057.64 and 160,818.80 is: 241,265.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,311.60 : 578,057.64 = 160,818.80 : x
  2. Step 2: Convert to fraction form
    385,311.60/578,057.64 = 160,818.80/x
  3. Step 3: Cross multiply
    385,311.60x = 578,057.64 × 160,818.80
  4. Step 4: Simplify right side
    385,311.60x = 92,962,535,995.63
  5. Step 5: Solve for x
    x = 92,962,535,995.63/385,311.60
  6. Step 6: Final answer
    x = 241,265.86

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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.