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Finding the Fourth Proportional to 316,809.66, 475,164.80 and 103,576.08

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Solution

The fourth proportional to 316,809.66, 475,164.80 and 103,576.08 is: 155,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,809.66 : 475,164.80 = 103,576.08 : x
  2. Step 2: Convert to fraction form
    316,809.66/475,164.80 = 103,576.08/x
  3. Step 3: Cross multiply
    316,809.66x = 475,164.80 × 103,576.08
  4. Step 4: Simplify right side
    316,809.66x = 49,215,707,337.98
  5. Step 5: Solve for x
    x = 49,215,707,337.98/316,809.66
  6. Step 6: Final answer
    x = 155,347.87

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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.