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Finding the Fourth Proportional to 318,771.72, 439,620.62 and 226,710.36

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Solution

The fourth proportional to 318,771.72, 439,620.62 and 226,710.36 is: 312,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,771.72 : 439,620.62 = 226,710.36 : x
  2. Step 2: Convert to fraction form
    318,771.72/439,620.62 = 226,710.36/x
  3. Step 3: Cross multiply
    318,771.72x = 439,620.62 × 226,710.36
  4. Step 4: Simplify right side
    318,771.72x = 99,666,547,890.07
  5. Step 5: Solve for x
    x = 99,666,547,890.07/318,771.72
  6. Step 6: Final answer
    x = 312,658.06

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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.