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Finding the Fourth Proportional to 443,574.71, 611,495.75 and 316,028.87

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Solution

The fourth proportional to 443,574.71, 611,495.75 and 316,028.87 is: 435,665.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,574.71 : 611,495.75 = 316,028.87 : x
  2. Step 2: Convert to fraction form
    443,574.71/611,495.75 = 316,028.87/x
  3. Step 3: Cross multiply
    443,574.71x = 611,495.75 × 316,028.87
  4. Step 4: Simplify right side
    443,574.71x = 193,250,310,882.30
  5. Step 5: Solve for x
    x = 193,250,310,882.30/443,574.71
  6. Step 6: Final answer
    x = 435,665.75

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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.