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Finding the Fourth Proportional to 536,431.20, 803,334.60 and 255,620.40

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Solution

The fourth proportional to 536,431.20, 803,334.60 and 255,620.40 is: 382,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,431.20 : 803,334.60 = 255,620.40 : x
  2. Step 2: Convert to fraction form
    536,431.20/803,334.60 = 255,620.40/x
  3. Step 3: Cross multiply
    536,431.20x = 803,334.60 × 255,620.40
  4. Step 4: Simplify right side
    536,431.20x = 205,348,711,785.84
  5. Step 5: Solve for x
    x = 205,348,711,785.84/536,431.20
  6. Step 6: Final answer
    x = 382,805.31

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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.