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Finding the Fourth Proportional to 286,491.82, 429,330.21 and 211,018.45

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Solution

The fourth proportional to 286,491.82, 429,330.21 and 211,018.45 is: 316,227.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,491.82 : 429,330.21 = 211,018.45 : x
  2. Step 2: Convert to fraction form
    286,491.82/429,330.21 = 211,018.45/x
  3. Step 3: Cross multiply
    286,491.82x = 429,330.21 × 211,018.45
  4. Step 4: Simplify right side
    286,491.82x = 90,596,595,452.37
  5. Step 5: Solve for x
    x = 90,596,595,452.37/286,491.82
  6. Step 6: Final answer
    x = 316,227.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.