Home / 283,418.18-391,109.10-154,353.74

Finding the Fourth Proportional to 283,418.18, 391,109.10 and 154,353.74

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Solution

The fourth proportional to 283,418.18, 391,109.10 and 154,353.74 is: 213,003.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,418.18 : 391,109.10 = 154,353.74 : x
  2. Step 2: Convert to fraction form
    283,418.18/391,109.10 = 154,353.74/x
  3. Step 3: Cross multiply
    283,418.18x = 391,109.10 × 154,353.74
  4. Step 4: Simplify right side
    283,418.18x = 60,369,152,333.03
  5. Step 5: Solve for x
    x = 60,369,152,333.03/283,418.18
  6. Step 6: Final answer
    x = 213,003.81

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1.5x scale

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.