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Finding the Fourth Proportional to 529,955.82, 731,348.55 and 288,243.72

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Solution

The fourth proportional to 529,955.82, 731,348.55 and 288,243.72 is: 397,781.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,955.82 : 731,348.55 = 288,243.72 : x
  2. Step 2: Convert to fraction form
    529,955.82/731,348.55 = 288,243.72/x
  3. Step 3: Cross multiply
    529,955.82x = 731,348.55 × 288,243.72
  4. Step 4: Simplify right side
    529,955.82x = 210,806,626,668.61
  5. Step 5: Solve for x
    x = 210,806,626,668.61/529,955.82
  6. Step 6: Final answer
    x = 397,781.51

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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.