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Finding the Fourth Proportional to 529,159.36, 730,245.36 and 287,446.72

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Solution

The fourth proportional to 529,159.36, 730,245.36 and 287,446.72 is: 396,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,159.36 : 730,245.36 = 287,446.72 : x
  2. Step 2: Convert to fraction form
    529,159.36/730,245.36 = 287,446.72/x
  3. Step 3: Cross multiply
    529,159.36x = 730,245.36 × 287,446.72
  4. Step 4: Simplify right side
    529,159.36x = 209,906,633,527.22
  5. Step 5: Solve for x
    x = 209,906,633,527.22/529,159.36
  6. Step 6: Final answer
    x = 396,679.43

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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.