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Finding the Fourth Proportional to 220,897.60, 331,346.40 and 161,411.20

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Solution

The fourth proportional to 220,897.60, 331,346.40 and 161,411.20 is: 242,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,897.60 : 331,346.40 = 161,411.20 : x
  2. Step 2: Convert to fraction form
    220,897.60/331,346.40 = 161,411.20/x
  3. Step 3: Cross multiply
    220,897.60x = 331,346.40 × 161,411.20
  4. Step 4: Simplify right side
    220,897.60x = 53,483,020,039.68
  5. Step 5: Solve for x
    x = 53,483,020,039.68/220,897.60
  6. Step 6: Final answer
    x = 242,116.80

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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.