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Finding the Fourth Proportional to 316,029.85, 436,118.21 and 172,788.37

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Solution

The fourth proportional to 316,029.85, 436,118.21 and 172,788.37 is: 238,446.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,029.85 : 436,118.21 = 172,788.37 : x
  2. Step 2: Convert to fraction form
    316,029.85/436,118.21 = 172,788.37/x
  3. Step 3: Cross multiply
    316,029.85x = 436,118.21 × 172,788.37
  4. Step 4: Simplify right side
    316,029.85x = 75,356,153,326.94
  5. Step 5: Solve for x
    x = 75,356,153,326.94/316,029.85
  6. Step 6: Final answer
    x = 238,446.32

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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.