Home / 283,423.10-391,151.51-211,678.56

Finding the Fourth Proportional to 283,423.10, 391,151.51 and 211,678.56

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Solution

The fourth proportional to 283,423.10, 391,151.51 and 211,678.56 is: 292,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,423.10 : 391,151.51 = 211,678.56 : x
  2. Step 2: Convert to fraction form
    283,423.10/391,151.51 = 211,678.56/x
  3. Step 3: Cross multiply
    283,423.10x = 391,151.51 × 211,678.56
  4. Step 4: Simplify right side
    283,423.10x = 82,798,387,320.23
  5. Step 5: Solve for x
    x = 82,798,387,320.23/283,423.10
  6. Step 6: Final answer
    x = 292,137.05

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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.