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Finding the Fourth Proportional to 318,326.40, 477,710.40 and 239,606.40

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Solution

The fourth proportional to 318,326.40, 477,710.40 and 239,606.40 is: 359,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,326.40 : 477,710.40 = 239,606.40 : x
  2. Step 2: Convert to fraction form
    318,326.40/477,710.40 = 239,606.40/x
  3. Step 3: Cross multiply
    318,326.40x = 477,710.40 × 239,606.40
  4. Step 4: Simplify right side
    318,326.40x = 114,462,469,186.56
  5. Step 5: Solve for x
    x = 114,462,469,186.56/318,326.40
  6. Step 6: Final answer
    x = 359,575.80

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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.