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Finding the Fourth Proportional to 365,587.80, 548,705.70 and 215,640.60

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Solution

The fourth proportional to 365,587.80, 548,705.70 and 215,640.60 is: 323,652.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,587.80 : 548,705.70 = 215,640.60 : x
  2. Step 2: Convert to fraction form
    365,587.80/548,705.70 = 215,640.60/x
  3. Step 3: Cross multiply
    365,587.80x = 548,705.70 × 215,640.60
  4. Step 4: Simplify right side
    365,587.80x = 118,323,226,371.42
  5. Step 5: Solve for x
    x = 118,323,226,371.42/365,587.80
  6. Step 6: Final answer
    x = 323,652.01

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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.