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Finding the Fourth Proportional to 431,955.20, 647,702.40 and 182,355.20

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Solution

The fourth proportional to 431,955.20, 647,702.40 and 182,355.20 is: 273,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,955.20 : 647,702.40 = 182,355.20 : x
  2. Step 2: Convert to fraction form
    431,955.20/647,702.40 = 182,355.20/x
  3. Step 3: Cross multiply
    431,955.20x = 647,702.40 × 182,355.20
  4. Step 4: Simplify right side
    431,955.20x = 118,111,900,692.48
  5. Step 5: Solve for x
    x = 118,111,900,692.48/431,955.20
  6. Step 6: Final answer
    x = 273,435.53

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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.