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Finding the Fourth Proportional to 529,642.29, 730,897.75 and 287,930.95

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Solution

The fourth proportional to 529,642.29, 730,897.75 and 287,930.95 is: 397,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,642.29 : 730,897.75 = 287,930.95 : x
  2. Step 2: Convert to fraction form
    529,642.29/730,897.75 = 287,930.95/x
  3. Step 3: Cross multiply
    529,642.29x = 730,897.75 × 287,930.95
  4. Step 4: Simplify right side
    529,642.29x = 210,448,084,534.72
  5. Step 5: Solve for x
    x = 210,448,084,534.72/529,642.29
  6. Step 6: Final answer
    x = 397,340.03

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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.