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Finding the Fourth Proportional to 578,426.40, 867,380.40 and 223,322.40

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Solution

The fourth proportional to 578,426.40, 867,380.40 and 223,322.40 is: 334,883.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,426.40 : 867,380.40 = 223,322.40 : x
  2. Step 2: Convert to fraction form
    578,426.40/867,380.40 = 223,322.40/x
  3. Step 3: Cross multiply
    578,426.40x = 867,380.40 × 223,322.40
  4. Step 4: Simplify right side
    578,426.40x = 193,705,472,640.96
  5. Step 5: Solve for x
    x = 193,705,472,640.96/578,426.40
  6. Step 6: Final answer
    x = 334,883.53

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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.