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Finding the Fourth Proportional to 219,340.80, 307,699.20 and 219,340.80

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Solution

The fourth proportional to 219,340.80, 307,699.20 and 219,340.80 is: 307,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,340.80 : 307,699.20 = 219,340.80 : x
  2. Step 2: Convert to fraction form
    219,340.80/307,699.20 = 219,340.80/x
  3. Step 3: Cross multiply
    219,340.80x = 307,699.20 × 219,340.80
  4. Step 4: Simplify right side
    219,340.80x = 67,490,988,687.36
  5. Step 5: Solve for x
    x = 67,490,988,687.36/219,340.80
  6. Step 6: Final answer
    x = 307,699.20

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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.