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Finding the Fourth Proportional to 255,617.27, 383,411.96 and 78,124.22

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Solution

The fourth proportional to 255,617.27, 383,411.96 and 78,124.22 is: 117,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,617.27 : 383,411.96 = 78,124.22 : x
  2. Step 2: Convert to fraction form
    255,617.27/383,411.96 = 78,124.22/x
  3. Step 3: Cross multiply
    255,617.27x = 383,411.96 × 78,124.22
  4. Step 4: Simplify right side
    255,617.27x = 29,953,759,923.05
  5. Step 5: Solve for x
    x = 29,953,759,923.05/255,617.27
  6. Step 6: Final answer
    x = 117,182.07

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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.