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Finding the Fourth Proportional to 425,352.60, 637,875.30 and 214,920.60

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Solution

The fourth proportional to 425,352.60, 637,875.30 and 214,920.60 is: 322,303.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,352.60 : 637,875.30 = 214,920.60 : x
  2. Step 2: Convert to fraction form
    425,352.60/637,875.30 = 214,920.60/x
  3. Step 3: Cross multiply
    425,352.60x = 637,875.30 × 214,920.60
  4. Step 4: Simplify right side
    425,352.60x = 137,092,542,201.18
  5. Step 5: Solve for x
    x = 137,092,542,201.18/425,352.60
  6. Step 6: Final answer
    x = 322,303.29

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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.