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Finding the Fourth Proportional to 316,632.72, 436,940.02 and 173,390.30

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Solution

The fourth proportional to 316,632.72, 436,940.02 and 173,390.30 is: 239,271.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,632.72 : 436,940.02 = 173,390.30 : x
  2. Step 2: Convert to fraction form
    316,632.72/436,940.02 = 173,390.30/x
  3. Step 3: Cross multiply
    316,632.72x = 436,940.02 × 173,390.30
  4. Step 4: Simplify right side
    316,632.72x = 75,761,161,149.81
  5. Step 5: Solve for x
    x = 75,761,161,149.81/316,632.72
  6. Step 6: Final answer
    x = 239,271.42

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1.5x scale

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.