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Finding the Fourth Proportional to 425,087.40, 637,707.90 and 214,194.60

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Solution

The fourth proportional to 425,087.40, 637,707.90 and 214,194.60 is: 321,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,087.40 : 637,707.90 = 214,194.60 : x
  2. Step 2: Convert to fraction form
    425,087.40/637,707.90 = 214,194.60/x
  3. Step 3: Cross multiply
    425,087.40x = 637,707.90 × 214,194.60
  4. Step 4: Simplify right side
    425,087.40x = 136,593,588,557.34
  5. Step 5: Solve for x
    x = 136,593,588,557.34/425,087.40
  6. Step 6: Final answer
    x = 321,330.60

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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.