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Finding the Fourth Proportional to 250,354.76, 345,373.72 and 221,703.60

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Solution

The fourth proportional to 250,354.76, 345,373.72 and 221,703.60 is: 305,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,354.76 : 345,373.72 = 221,703.60 : x
  2. Step 2: Convert to fraction form
    250,354.76/345,373.72 = 221,703.60/x
  3. Step 3: Cross multiply
    250,354.76x = 345,373.72 × 221,703.60
  4. Step 4: Simplify right side
    250,354.76x = 76,570,597,069.39
  5. Step 5: Solve for x
    x = 76,570,597,069.39/250,354.76
  6. Step 6: Final answer
    x = 305,848.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.