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Finding the Fourth Proportional to 279,950.60, 419,925.36 and 69,588.74

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Solution

The fourth proportional to 279,950.60, 419,925.36 and 69,588.74 is: 104,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,950.60 : 419,925.36 = 69,588.74 : x
  2. Step 2: Convert to fraction form
    279,950.60/419,925.36 = 69,588.74/x
  3. Step 3: Cross multiply
    279,950.60x = 419,925.36 × 69,588.74
  4. Step 4: Simplify right side
    279,950.60x = 29,222,076,696.45
  5. Step 5: Solve for x
    x = 29,222,076,696.45/279,950.60
  6. Step 6: Final answer
    x = 104,382.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.