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Finding the Fourth Proportional to 311,114.40, 465,980.40 and 255,818.40

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Solution

The fourth proportional to 311,114.40, 465,980.40 and 255,818.40 is: 383,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,114.40 : 465,980.40 = 255,818.40 : x
  2. Step 2: Convert to fraction form
    311,114.40/465,980.40 = 255,818.40/x
  3. Step 3: Cross multiply
    311,114.40x = 465,980.40 × 255,818.40
  4. Step 4: Simplify right side
    311,114.40x = 119,206,360,359.36
  5. Step 5: Solve for x
    x = 119,206,360,359.36/311,114.40
  6. Step 6: Final answer
    x = 383,159.25

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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.