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Finding the Fourth Proportional to 255,528.36, 383,350.86 and 78,060.60

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Solution

The fourth proportional to 255,528.36, 383,350.86 and 78,060.60 is: 117,108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,528.36 : 383,350.86 = 78,060.60 : x
  2. Step 2: Convert to fraction form
    255,528.36/383,350.86 = 78,060.60/x
  3. Step 3: Cross multiply
    255,528.36x = 383,350.86 × 78,060.60
  4. Step 4: Simplify right side
    255,528.36x = 29,924,598,142.12
  5. Step 5: Solve for x
    x = 29,924,598,142.12/255,528.36
  6. Step 6: Final answer
    x = 117,108.72

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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.