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Finding the Fourth Proportional to 216,946.70, 325,420.05 and 214,978.40

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Solution

The fourth proportional to 216,946.70, 325,420.05 and 214,978.40 is: 322,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,946.70 : 325,420.05 = 214,978.40 : x
  2. Step 2: Convert to fraction form
    216,946.70/325,420.05 = 214,978.40/x
  3. Step 3: Cross multiply
    216,946.70x = 325,420.05 × 214,978.40
  4. Step 4: Simplify right side
    216,946.70x = 69,958,281,676.92
  5. Step 5: Solve for x
    x = 69,958,281,676.92/216,946.70
  6. Step 6: Final answer
    x = 322,467.60

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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.