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Finding the Fourth Proportional to 479,307.71, 718,782.14 and 205,719.37

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Solution

The fourth proportional to 479,307.71, 718,782.14 and 205,719.37 is: 308,502.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,307.71 : 718,782.14 = 205,719.37 : x
  2. Step 2: Convert to fraction form
    479,307.71/718,782.14 = 205,719.37/x
  3. Step 3: Cross multiply
    479,307.71x = 718,782.14 × 205,719.37
  4. Step 4: Simplify right side
    479,307.71x = 147,867,409,008.05
  5. Step 5: Solve for x
    x = 147,867,409,008.05/479,307.71
  6. Step 6: Final answer
    x = 308,502.05

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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.