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Finding the Fourth Proportional to 234,019.40, 351,029.10 and 84,428.60

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Solution

The fourth proportional to 234,019.40, 351,029.10 and 84,428.60 is: 126,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,019.40 : 351,029.10 = 84,428.60 : x
  2. Step 2: Convert to fraction form
    234,019.40/351,029.10 = 84,428.60/x
  3. Step 3: Cross multiply
    234,019.40x = 351,029.10 × 84,428.60
  4. Step 4: Simplify right side
    234,019.40x = 29,636,895,472.26
  5. Step 5: Solve for x
    x = 29,636,895,472.26/234,019.40
  6. Step 6: Final answer
    x = 126,642.90

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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.