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Finding the Fourth Proportional to 222,898.80, 334,348.20 and 128,420.40

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Solution

The fourth proportional to 222,898.80, 334,348.20 and 128,420.40 is: 192,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,898.80 : 334,348.20 = 128,420.40 : x
  2. Step 2: Convert to fraction form
    222,898.80/334,348.20 = 128,420.40/x
  3. Step 3: Cross multiply
    222,898.80x = 334,348.20 × 128,420.40
  4. Step 4: Simplify right side
    222,898.80x = 42,937,129,583.28
  5. Step 5: Solve for x
    x = 42,937,129,583.28/222,898.80
  6. Step 6: Final answer
    x = 192,630.60

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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.