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Finding the Fourth Proportional to 219,880.80, 308,455.20 and 219,880.80

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Solution

The fourth proportional to 219,880.80, 308,455.20 and 219,880.80 is: 308,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,880.80 : 308,455.20 = 219,880.80 : x
  2. Step 2: Convert to fraction form
    219,880.80/308,455.20 = 219,880.80/x
  3. Step 3: Cross multiply
    219,880.80x = 308,455.20 × 219,880.80
  4. Step 4: Simplify right side
    219,880.80x = 67,823,376,140.16
  5. Step 5: Solve for x
    x = 67,823,376,140.16/219,880.80
  6. Step 6: Final answer
    x = 308,455.20

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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.