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Finding the Fourth Proportional to 230,239.32, 345,405.68 and 72,431.07

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Solution

The fourth proportional to 230,239.32, 345,405.68 and 72,431.07 is: 108,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,239.32 : 345,405.68 = 72,431.07 : x
  2. Step 2: Convert to fraction form
    230,239.32/345,405.68 = 72,431.07/x
  3. Step 3: Cross multiply
    230,239.32x = 345,405.68 × 72,431.07
  4. Step 4: Simplify right side
    230,239.32x = 25,018,102,986.48
  5. Step 5: Solve for x
    x = 25,018,102,986.48/230,239.32
  6. Step 6: Final answer
    x = 108,661.30

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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.