Home / 256,411.18-383,017.80-189,981.05

Finding the Fourth Proportional to 256,411.18, 383,017.80 and 189,981.05

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Solution

The fourth proportional to 256,411.18, 383,017.80 and 189,981.05 is: 283,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,411.18 : 383,017.80 = 189,981.05 : x
  2. Step 2: Convert to fraction form
    256,411.18/383,017.80 = 189,981.05/x
  3. Step 3: Cross multiply
    256,411.18x = 383,017.80 × 189,981.05
  4. Step 4: Simplify right side
    256,411.18x = 72,766,125,245.19
  5. Step 5: Solve for x
    x = 72,766,125,245.19/256,411.18
  6. Step 6: Final answer
    x = 283,786.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.