Home / 399,829.46-551,711.40-256,783.28

Finding the Fourth Proportional to 399,829.46, 551,711.40 and 256,783.28

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Solution

The fourth proportional to 399,829.46, 551,711.40 and 256,783.28 is: 354,326.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,829.46 : 551,711.40 = 256,783.28 : x
  2. Step 2: Convert to fraction form
    399,829.46/551,711.40 = 256,783.28/x
  3. Step 3: Cross multiply
    399,829.46x = 551,711.40 × 256,783.28
  4. Step 4: Simplify right side
    399,829.46x = 141,670,262,905.39
  5. Step 5: Solve for x
    x = 141,670,262,905.39/399,829.46
  6. Step 6: Final answer
    x = 354,326.72

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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.