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Finding the Fourth Proportional to 271,854.80, 407,782.20 and 258,732.80

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Solution

The fourth proportional to 271,854.80, 407,782.20 and 258,732.80 is: 388,099.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,854.80 : 407,782.20 = 258,732.80 : x
  2. Step 2: Convert to fraction form
    271,854.80/407,782.20 = 258,732.80/x
  3. Step 3: Cross multiply
    271,854.80x = 407,782.20 × 258,732.80
  4. Step 4: Simplify right side
    271,854.80x = 105,506,630,396.16
  5. Step 5: Solve for x
    x = 105,506,630,396.16/271,854.80
  6. Step 6: Final answer
    x = 388,099.20

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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.