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Finding the Fourth Proportional to 421,659.75, 581,904.22 and 230,673.15

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Solution

The fourth proportional to 421,659.75, 581,904.22 and 230,673.15 is: 318,336.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,659.75 : 581,904.22 = 230,673.15 : x
  2. Step 2: Convert to fraction form
    421,659.75/581,904.22 = 230,673.15/x
  3. Step 3: Cross multiply
    421,659.75x = 581,904.22 × 230,673.15
  4. Step 4: Simplify right side
    421,659.75x = 134,229,679,425.69
  5. Step 5: Solve for x
    x = 134,229,679,425.69/421,659.75
  6. Step 6: Final answer
    x = 318,336.48

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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.