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Finding the Fourth Proportional to 326,279.36, 488,754.72 and 299,063.36

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Solution

The fourth proportional to 326,279.36, 488,754.72 and 299,063.36 is: 447,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,279.36 : 488,754.72 = 299,063.36 : x
  2. Step 2: Convert to fraction form
    326,279.36/488,754.72 = 299,063.36/x
  3. Step 3: Cross multiply
    326,279.36x = 488,754.72 × 299,063.36
  4. Step 4: Simplify right side
    326,279.36x = 146,168,628,779.06
  5. Step 5: Solve for x
    x = 146,168,628,779.06/326,279.36
  6. Step 6: Final answer
    x = 447,986.13

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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.