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Finding the Fourth Proportional to 316,558.92, 474,821.36 and 79,903.64

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Solution

The fourth proportional to 316,558.92, 474,821.36 and 79,903.64 is: 119,851.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,558.92 : 474,821.36 = 79,903.64 : x
  2. Step 2: Convert to fraction form
    316,558.92/474,821.36 = 79,903.64/x
  3. Step 3: Cross multiply
    316,558.92x = 474,821.36 × 79,903.64
  4. Step 4: Simplify right side
    316,558.92x = 37,939,955,013.75
  5. Step 5: Solve for x
    x = 37,939,955,013.75/316,558.92
  6. Step 6: Final answer
    x = 119,851.16

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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.