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Finding the Fourth Proportional to 318,451.96, 439,095.53 and 253,870.72

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Solution

The fourth proportional to 318,451.96, 439,095.53 and 253,870.72 is: 350,048.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,451.96 : 439,095.53 = 253,870.72 : x
  2. Step 2: Convert to fraction form
    318,451.96/439,095.53 = 253,870.72/x
  3. Step 3: Cross multiply
    318,451.96x = 439,095.53 × 253,870.72
  4. Step 4: Simplify right side
    318,451.96x = 111,473,498,504.30
  5. Step 5: Solve for x
    x = 111,473,498,504.30/318,451.96
  6. Step 6: Final answer
    x = 350,048.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.