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Finding the Fourth Proportional to 443,576.09, 611,497.64 and 316,030.25

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Solution

The fourth proportional to 443,576.09, 611,497.64 and 316,030.25 is: 435,667.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,576.09 : 611,497.64 = 316,030.25 : x
  2. Step 2: Convert to fraction form
    443,576.09/611,497.64 = 316,030.25/x
  3. Step 3: Cross multiply
    443,576.09x = 611,497.64 × 316,030.25
  4. Step 4: Simplify right side
    443,576.09x = 193,251,754,362.43
  5. Step 5: Solve for x
    x = 193,251,754,362.43/443,576.09
  6. Step 6: Final answer
    x = 435,667.65

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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.