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Finding the Fourth Proportional to 316,630.71, 436,937.26 and 173,388.29

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Solution

The fourth proportional to 316,630.71, 436,937.26 and 173,388.29 is: 239,268.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,630.71 : 436,937.26 = 173,388.29 : x
  2. Step 2: Convert to fraction form
    316,630.71/436,937.26 = 173,388.29/x
  3. Step 3: Cross multiply
    316,630.71x = 436,937.26 × 173,388.29
  4. Step 4: Simplify right side
    316,630.71x = 75,759,804,348.69
  5. Step 5: Solve for x
    x = 75,759,804,348.69/316,630.71
  6. Step 6: Final answer
    x = 239,268.66

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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.