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Finding the Fourth Proportional to 286,661.40, 429,992.10 and 272,883.30

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Solution

The fourth proportional to 286,661.40, 429,992.10 and 272,883.30 is: 409,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,661.40 : 429,992.10 = 272,883.30 : x
  2. Step 2: Convert to fraction form
    286,661.40/429,992.10 = 272,883.30/x
  3. Step 3: Cross multiply
    286,661.40x = 429,992.10 × 272,883.30
  4. Step 4: Simplify right side
    286,661.40x = 117,337,663,221.93
  5. Step 5: Solve for x
    x = 117,337,663,221.93/286,661.40
  6. Step 6: Final answer
    x = 409,324.95

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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.