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Finding the Fourth Proportional to 255,907.92, 353,153.40 and 142,737.96

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Solution

The fourth proportional to 255,907.92, 353,153.40 and 142,737.96 is: 196,978.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,907.92 : 353,153.40 = 142,737.96 : x
  2. Step 2: Convert to fraction form
    255,907.92/353,153.40 = 142,737.96/x
  3. Step 3: Cross multiply
    255,907.92x = 353,153.40 × 142,737.96
  4. Step 4: Simplify right side
    255,907.92x = 50,408,395,883.06
  5. Step 5: Solve for x
    x = 50,408,395,883.06/255,907.92
  6. Step 6: Final answer
    x = 196,978.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.