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Finding the Fourth Proportional to 316,448.64, 436,699.26 and 173,209.41

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Solution

The fourth proportional to 316,448.64, 436,699.26 and 173,209.41 is: 239,029.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,448.64 : 436,699.26 = 173,209.41 : x
  2. Step 2: Convert to fraction form
    316,448.64/436,699.26 = 173,209.41/x
  3. Step 3: Cross multiply
    316,448.64x = 436,699.26 × 173,209.41
  4. Step 4: Simplify right side
    316,448.64x = 75,640,421,172.04
  5. Step 5: Solve for x
    x = 75,640,421,172.04/316,448.64
  6. Step 6: Final answer
    x = 239,029.06

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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.