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Finding the Fourth Proportional to 316,855.63, 437,260.80 and 189,561.25

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Solution

The fourth proportional to 316,855.63, 437,260.80 and 189,561.25 is: 261,594.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,855.63 : 437,260.80 = 189,561.25 : x
  2. Step 2: Convert to fraction form
    316,855.63/437,260.80 = 189,561.25/x
  3. Step 3: Cross multiply
    316,855.63x = 437,260.80 × 189,561.25
  4. Step 4: Simplify right side
    316,855.63x = 82,887,703,824
  5. Step 5: Solve for x
    x = 82,887,703,824/316,855.63
  6. Step 6: Final answer
    x = 261,594.54

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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.