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Finding the Fourth Proportional to 548,056.81, 756,318.12 and 321,702.31

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Solution

The fourth proportional to 548,056.81, 756,318.12 and 321,702.31 is: 443,949.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,056.81 : 756,318.12 = 321,702.31 : x
  2. Step 2: Convert to fraction form
    548,056.81/756,318.12 = 321,702.31/x
  3. Step 3: Cross multiply
    548,056.81x = 756,318.12 × 321,702.31
  4. Step 4: Simplify right side
    548,056.81x = 243,309,286,298.86
  5. Step 5: Solve for x
    x = 243,309,286,298.86/548,056.81
  6. Step 6: Final answer
    x = 443,949.02

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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.