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Finding the Fourth Proportional to 255,439.69, 383,159.30 and 120,472.27

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Solution

The fourth proportional to 255,439.69, 383,159.30 and 120,472.27 is: 180,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,439.69 : 383,159.30 = 120,472.27 : x
  2. Step 2: Convert to fraction form
    255,439.69/383,159.30 = 120,472.27/x
  3. Step 3: Cross multiply
    255,439.69x = 383,159.30 × 120,472.27
  4. Step 4: Simplify right side
    255,439.69x = 46,160,069,082.35
  5. Step 5: Solve for x
    x = 46,160,069,082.35/255,439.69
  6. Step 6: Final answer
    x = 180,708.29

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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.