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Finding the Fourth Proportional to 316,577.45, 436,887.86 and 173,338.47

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Solution

The fourth proportional to 316,577.45, 436,887.86 and 173,338.47 is: 239,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,577.45 : 436,887.86 = 173,338.47 : x
  2. Step 2: Convert to fraction form
    316,577.45/436,887.86 = 173,338.47/x
  3. Step 3: Cross multiply
    316,577.45x = 436,887.86 × 173,338.47
  4. Step 4: Simplify right side
    316,577.45x = 75,729,472,347.28
  5. Step 5: Solve for x
    x = 75,729,472,347.28/316,577.45
  6. Step 6: Final answer
    x = 239,213.10

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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.