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Finding the Fourth Proportional to 230,425.79, 345,638.73 and 72,666.59

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Solution

The fourth proportional to 230,425.79, 345,638.73 and 72,666.59 is: 108,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,425.79 : 345,638.73 = 72,666.59 : x
  2. Step 2: Convert to fraction form
    230,425.79/345,638.73 = 72,666.59/x
  3. Step 3: Cross multiply
    230,425.79x = 345,638.73 × 72,666.59
  4. Step 4: Simplify right side
    230,425.79x = 25,116,387,881.03
  5. Step 5: Solve for x
    x = 25,116,387,881.03/230,425.79
  6. Step 6: Final answer
    x = 108,999.90

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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.