Home / 283,711.21-391,521.37-156,388.93

Finding the Fourth Proportional to 283,711.21, 391,521.37 and 156,388.93

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Solution

The fourth proportional to 283,711.21, 391,521.37 and 156,388.93 is: 215,816.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,711.21 : 391,521.37 = 156,388.93 : x
  2. Step 2: Convert to fraction form
    283,711.21/391,521.37 = 156,388.93/x
  3. Step 3: Cross multiply
    283,711.21x = 391,521.37 × 156,388.93
  4. Step 4: Simplify right side
    283,711.21x = 61,229,605,386.88
  5. Step 5: Solve for x
    x = 61,229,605,386.88/283,711.21
  6. Step 6: Final answer
    x = 215,816.66

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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.