Home / 421,689.47-581,921.48-230,704.43

Finding the Fourth Proportional to 421,689.47, 581,921.48 and 230,704.43

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Solution

The fourth proportional to 421,689.47, 581,921.48 and 230,704.43 is: 318,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,689.47 : 581,921.48 = 230,704.43 : x
  2. Step 2: Convert to fraction form
    421,689.47/581,921.48 = 230,704.43/x
  3. Step 3: Cross multiply
    421,689.47x = 581,921.48 × 230,704.43
  4. Step 4: Simplify right side
    421,689.47x = 134,251,861,015.31
  5. Step 5: Solve for x
    x = 134,251,861,015.31/421,689.47
  6. Step 6: Final answer
    x = 318,366.65

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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.