Home / 399,826.46-551,707.26-256,780.28

Finding the Fourth Proportional to 399,826.46, 551,707.26 and 256,780.28

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Solution

The fourth proportional to 399,826.46, 551,707.26 and 256,780.28 is: 354,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,826.46 : 551,707.26 = 256,780.28 : x
  2. Step 2: Convert to fraction form
    399,826.46/551,707.26 = 256,780.28/x
  3. Step 3: Cross multiply
    399,826.46x = 551,707.26 × 256,780.28
  4. Step 4: Simplify right side
    399,826.46x = 141,667,544,700.83
  5. Step 5: Solve for x
    x = 141,667,544,700.83/399,826.46
  6. Step 6: Final answer
    x = 354,322.58

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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.