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Finding the Fourth Proportional to 499,558.06, 689,388.65 and 270,113.71

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Solution

The fourth proportional to 499,558.06, 689,388.65 and 270,113.71 is: 372,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,558.06 : 689,388.65 = 270,113.71 : x
  2. Step 2: Convert to fraction form
    499,558.06/689,388.65 = 270,113.71/x
  3. Step 3: Cross multiply
    499,558.06x = 689,388.65 × 270,113.71
  4. Step 4: Simplify right side
    499,558.06x = 186,213,325,883.39
  5. Step 5: Solve for x
    x = 186,213,325,883.39/499,558.06
  6. Step 6: Final answer
    x = 372,756.12

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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.