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Finding the Fourth Proportional to 286,072.20, 429,302.70 and 159,712.20

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Solution

The fourth proportional to 286,072.20, 429,302.70 and 159,712.20 is: 239,676.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,072.20 : 429,302.70 = 159,712.20 : x
  2. Step 2: Convert to fraction form
    286,072.20/429,302.70 = 159,712.20/x
  3. Step 3: Cross multiply
    286,072.20x = 429,302.70 × 159,712.20
  4. Step 4: Simplify right side
    286,072.20x = 68,564,878,682.94
  5. Step 5: Solve for x
    x = 68,564,878,682.94/286,072.20
  6. Step 6: Final answer
    x = 239,676.83

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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.