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Finding the Fourth Proportional to 255,356.80, 383,035.36 and 122,205.76

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Solution

The fourth proportional to 255,356.80, 383,035.36 and 122,205.76 is: 183,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,356.80 : 383,035.36 = 122,205.76 : x
  2. Step 2: Convert to fraction form
    255,356.80/383,035.36 = 122,205.76/x
  3. Step 3: Cross multiply
    255,356.80x = 383,035.36 × 122,205.76
  4. Step 4: Simplify right side
    255,356.80x = 46,809,127,275.67
  5. Step 5: Solve for x
    x = 46,809,127,275.67/255,356.80
  6. Step 6: Final answer
    x = 183,308.72

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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.