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Finding the Fourth Proportional to 318,351.62, 439,955.31 and 260,900.35

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Solution

The fourth proportional to 318,351.62, 439,955.31 and 260,900.35 is: 360,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,351.62 : 439,955.31 = 260,900.35 : x
  2. Step 2: Convert to fraction form
    318,351.62/439,955.31 = 260,900.35/x
  3. Step 3: Cross multiply
    318,351.62x = 439,955.31 × 260,900.35
  4. Step 4: Simplify right side
    318,351.62x = 114,784,494,363.36
  5. Step 5: Solve for x
    x = 114,784,494,363.36/318,351.62
  6. Step 6: Final answer
    x = 360,558.85

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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.