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Finding the Fourth Proportional to 499,287.50, 689,019.21 and 272,933

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Solution

The fourth proportional to 499,287.50, 689,019.21 and 272,933 is: 376,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,287.50 : 689,019.21 = 272,933 : x
  2. Step 2: Convert to fraction form
    499,287.50/689,019.21 = 272,933/x
  3. Step 3: Cross multiply
    499,287.50x = 689,019.21 × 272,933
  4. Step 4: Simplify right side
    499,287.50x = 188,056,080,042.93
  5. Step 5: Solve for x
    x = 188,056,080,042.93/499,287.50
  6. Step 6: Final answer
    x = 376,648.88

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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.