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Finding the Fourth Proportional to 230,420.79, 345,631.23 and 72,661.59

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Solution

The fourth proportional to 230,420.79, 345,631.23 and 72,661.59 is: 108,992.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,420.79 : 345,631.23 = 72,661.59 : x
  2. Step 2: Convert to fraction form
    230,420.79/345,631.23 = 72,661.59/x
  3. Step 3: Cross multiply
    230,420.79x = 345,631.23 × 72,661.59
  4. Step 4: Simplify right side
    230,420.79x = 25,114,114,725.46
  5. Step 5: Solve for x
    x = 25,114,114,725.46/230,420.79
  6. Step 6: Final answer
    x = 108,992.40

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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.