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Finding the Fourth Proportional to 219,028.80, 307,262.40 and 219,028.80

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Solution

The fourth proportional to 219,028.80, 307,262.40 and 219,028.80 is: 307,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,028.80 : 307,262.40 = 219,028.80 : x
  2. Step 2: Convert to fraction form
    219,028.80/307,262.40 = 219,028.80/x
  3. Step 3: Cross multiply
    219,028.80x = 307,262.40 × 219,028.80
  4. Step 4: Simplify right side
    219,028.80x = 67,299,314,757.12
  5. Step 5: Solve for x
    x = 67,299,314,757.12/219,028.80
  6. Step 6: Final answer
    x = 307,262.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.