Home / 255,717.42-383,562.30-78,224.45

Finding the Fourth Proportional to 255,717.42, 383,562.30 and 78,224.45

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Solution

The fourth proportional to 255,717.42, 383,562.30 and 78,224.45 is: 117,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,717.42 : 383,562.30 = 78,224.45 : x
  2. Step 2: Convert to fraction form
    255,717.42/383,562.30 = 78,224.45/x
  3. Step 3: Cross multiply
    255,717.42x = 383,562.30 × 78,224.45
  4. Step 4: Simplify right side
    255,717.42x = 30,003,948,333.77
  5. Step 5: Solve for x
    x = 30,003,948,333.77/255,717.42
  6. Step 6: Final answer
    x = 117,332.44

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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.