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Finding the Fourth Proportional to 499,717.64, 689,608.28 and 270,275.18

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Solution

The fourth proportional to 499,717.64, 689,608.28 and 270,275.18 is: 372,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,717.64 : 689,608.28 = 270,275.18 : x
  2. Step 2: Convert to fraction form
    499,717.64/689,608.28 = 270,275.18/x
  3. Step 3: Cross multiply
    499,717.64x = 689,608.28 × 270,275.18
  4. Step 4: Simplify right side
    499,717.64x = 186,383,997,207.07
  5. Step 5: Solve for x
    x = 186,383,997,207.07/499,717.64
  6. Step 6: Final answer
    x = 372,978.63

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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.