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Finding the Fourth Proportional to 271,859.10, 407,788.65 and 72,210.30

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Solution

The fourth proportional to 271,859.10, 407,788.65 and 72,210.30 is: 108,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,859.10 : 407,788.65 = 72,210.30 : x
  2. Step 2: Convert to fraction form
    271,859.10/407,788.65 = 72,210.30/x
  3. Step 3: Cross multiply
    271,859.10x = 407,788.65 × 72,210.30
  4. Step 4: Simplify right side
    271,859.10x = 29,446,540,753.10
  5. Step 5: Solve for x
    x = 29,446,540,753.10/271,859.10
  6. Step 6: Final answer
    x = 108,315.45

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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.