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Finding the Fourth Proportional to 443,575.71, 611,497.13 and 316,029.87

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Solution

The fourth proportional to 443,575.71, 611,497.13 and 316,029.87 is: 435,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,575.71 : 611,497.13 = 316,029.87 : x
  2. Step 2: Convert to fraction form
    443,575.71/611,497.13 = 316,029.87/x
  3. Step 3: Cross multiply
    443,575.71x = 611,497.13 × 316,029.87
  4. Step 4: Simplify right side
    443,575.71x = 193,251,358,499.27
  5. Step 5: Solve for x
    x = 193,251,358,499.27/443,575.71
  6. Step 6: Final answer
    x = 435,667.13

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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.