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Finding the Fourth Proportional to 286,229.40, 429,344.10 and 72,996.90

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Solution

The fourth proportional to 286,229.40, 429,344.10 and 72,996.90 is: 109,495.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,229.40 : 429,344.10 = 72,996.90 : x
  2. Step 2: Convert to fraction form
    286,229.40/429,344.10 = 72,996.90/x
  3. Step 3: Cross multiply
    286,229.40x = 429,344.10 × 72,996.90
  4. Step 4: Simplify right side
    286,229.40x = 31,340,788,333.29
  5. Step 5: Solve for x
    x = 31,340,788,333.29/286,229.40
  6. Step 6: Final answer
    x = 109,495.35

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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.