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Finding the Fourth Proportional to 319,668.12, 479,346.66 and 169,980.12

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Solution

The fourth proportional to 319,668.12, 479,346.66 and 169,980.12 is: 254,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,668.12 : 479,346.66 = 169,980.12 : x
  2. Step 2: Convert to fraction form
    319,668.12/479,346.66 = 169,980.12/x
  3. Step 3: Cross multiply
    319,668.12x = 479,346.66 × 169,980.12
  4. Step 4: Simplify right side
    319,668.12x = 81,479,402,788.40
  5. Step 5: Solve for x
    x = 81,479,402,788.40/319,668.12
  6. Step 6: Final answer
    x = 254,887.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.