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Finding the Fourth Proportional to 529,136.94, 730,222.56 and 287,433.34

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Solution

The fourth proportional to 529,136.94, 730,222.56 and 287,433.34 is: 396,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,136.94 : 730,222.56 = 287,433.34 : x
  2. Step 2: Convert to fraction form
    529,136.94/730,222.56 = 287,433.34/x
  3. Step 3: Cross multiply
    529,136.94x = 730,222.56 × 287,433.34
  4. Step 4: Simplify right side
    529,136.94x = 209,890,308,722.03
  5. Step 5: Solve for x
    x = 209,890,308,722.03/529,136.94
  6. Step 6: Final answer
    x = 396,665.39

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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.