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Finding the Fourth Proportional to 255,406.78, 383,166.51 and 77,927.50

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Solution

The fourth proportional to 255,406.78, 383,166.51 and 77,927.50 is: 116,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,406.78 : 383,166.51 = 77,927.50 : x
  2. Step 2: Convert to fraction form
    255,406.78/383,166.51 = 77,927.50/x
  3. Step 3: Cross multiply
    255,406.78x = 383,166.51 × 77,927.50
  4. Step 4: Simplify right side
    255,406.78x = 29,859,208,208.03
  5. Step 5: Solve for x
    x = 29,859,208,208.03/255,406.78
  6. Step 6: Final answer
    x = 116,908.44

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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.