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Finding the Fourth Proportional to 529,641.72, 730,896.98 and 287,930.39

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Solution

The fourth proportional to 529,641.72, 730,896.98 and 287,930.39 is: 397,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,641.72 : 730,896.98 = 287,930.39 : x
  2. Step 2: Convert to fraction form
    529,641.72/730,896.98 = 287,930.39/x
  3. Step 3: Cross multiply
    529,641.72x = 730,896.98 × 287,930.39
  4. Step 4: Simplify right side
    529,641.72x = 210,447,447,407.09
  5. Step 5: Solve for x
    x = 210,447,447,407.09/529,641.72
  6. Step 6: Final answer
    x = 397,339.26

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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.