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Finding the Fourth Proportional to 220,256.30, 308,980.90 and 220,256.30

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Solution

The fourth proportional to 220,256.30, 308,980.90 and 220,256.30 is: 308,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,256.30 : 308,980.90 = 220,256.30 : x
  2. Step 2: Convert to fraction form
    220,256.30/308,980.90 = 220,256.30/x
  3. Step 3: Cross multiply
    220,256.30x = 308,980.90 × 220,256.30
  4. Step 4: Simplify right side
    220,256.30x = 68,054,989,804.67
  5. Step 5: Solve for x
    x = 68,054,989,804.67/220,256.30
  6. Step 6: Final answer
    x = 308,980.90

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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.