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Finding the Fourth Proportional to 320,509.44, 441,812.16 and 239,814.72

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Solution

The fourth proportional to 320,509.44, 441,812.16 and 239,814.72 is: 330,577.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,509.44 : 441,812.16 = 239,814.72 : x
  2. Step 2: Convert to fraction form
    320,509.44/441,812.16 = 239,814.72/x
  3. Step 3: Cross multiply
    320,509.44x = 441,812.16 × 239,814.72
  4. Step 4: Simplify right side
    320,509.44x = 105,953,059,443.00
  5. Step 5: Solve for x
    x = 105,953,059,443.00/320,509.44
  6. Step 6: Final answer
    x = 330,577.03

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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.