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Finding the Fourth Proportional to 271,521.10, 407,320.05 and 84,513.10

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Solution

The fourth proportional to 271,521.10, 407,320.05 and 84,513.10 is: 126,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,521.10 : 407,320.05 = 84,513.10 : x
  2. Step 2: Convert to fraction form
    271,521.10/407,320.05 = 84,513.10/x
  3. Step 3: Cross multiply
    271,521.10x = 407,320.05 × 84,513.10
  4. Step 4: Simplify right side
    271,521.10x = 34,423,880,117.66
  5. Step 5: Solve for x
    x = 34,423,880,117.66/271,521.10
  6. Step 6: Final answer
    x = 126,781.60

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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.