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Finding the Fourth Proportional to 365,620.17, 548,429.16 and 128,905.77

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Solution

The fourth proportional to 365,620.17, 548,429.16 and 128,905.77 is: 193,358.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,620.17 : 548,429.16 = 128,905.77 : x
  2. Step 2: Convert to fraction form
    365,620.17/548,429.16 = 128,905.77/x
  3. Step 3: Cross multiply
    365,620.17x = 548,429.16 × 128,905.77
  4. Step 4: Simplify right side
    365,620.17x = 70,695,683,160.25
  5. Step 5: Solve for x
    x = 70,695,683,160.25/365,620.17
  6. Step 6: Final answer
    x = 193,358.27

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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.