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Finding the Fourth Proportional to 416,927.66, 575,558.51 and 279,343.49

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Solution

The fourth proportional to 416,927.66, 575,558.51 and 279,343.49 is: 385,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,927.66 : 575,558.51 = 279,343.49 : x
  2. Step 2: Convert to fraction form
    416,927.66/575,558.51 = 279,343.49/x
  3. Step 3: Cross multiply
    416,927.66x = 575,558.51 × 279,343.49
  4. Step 4: Simplify right side
    416,927.66x = 160,778,518,608.09
  5. Step 5: Solve for x
    x = 160,778,518,608.09/416,927.66
  6. Step 6: Final answer
    x = 385,626.90

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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.