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Finding the Fourth Proportional to 234,006.80, 351,010.20 and 139,528.40

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Solution

The fourth proportional to 234,006.80, 351,010.20 and 139,528.40 is: 209,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,006.80 : 351,010.20 = 139,528.40 : x
  2. Step 2: Convert to fraction form
    234,006.80/351,010.20 = 139,528.40/x
  3. Step 3: Cross multiply
    234,006.80x = 351,010.20 × 139,528.40
  4. Step 4: Simplify right side
    234,006.80x = 48,975,891,589.68
  5. Step 5: Solve for x
    x = 48,975,891,589.68/234,006.80
  6. Step 6: Final answer
    x = 209,292.60

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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.