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Finding the Fourth Proportional to 229,888.64, 344,832.66 and 72,129.40

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Solution

The fourth proportional to 229,888.64, 344,832.66 and 72,129.40 is: 108,194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,888.64 : 344,832.66 = 72,129.40 : x
  2. Step 2: Convert to fraction form
    229,888.64/344,832.66 = 72,129.40/x
  3. Step 3: Cross multiply
    229,888.64x = 344,832.66 × 72,129.40
  4. Step 4: Simplify right side
    229,888.64x = 24,872,572,004.12
  5. Step 5: Solve for x
    x = 24,872,572,004.12/229,888.64
  6. Step 6: Final answer
    x = 108,194.00

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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.