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Finding the Fourth Proportional to 517,242.97, 775,477.90 and 356,861.25

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Solution

The fourth proportional to 517,242.97, 775,477.90 and 356,861.25 is: 535,025.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,242.97 : 775,477.90 = 356,861.25 : x
  2. Step 2: Convert to fraction form
    517,242.97/775,477.90 = 356,861.25/x
  3. Step 3: Cross multiply
    517,242.97x = 775,477.90 × 356,861.25
  4. Step 4: Simplify right side
    517,242.97x = 276,738,012,741.38
  5. Step 5: Solve for x
    x = 276,738,012,741.38/517,242.97
  6. Step 6: Final answer
    x = 535,025.18

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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.