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Finding the Fourth Proportional to 274,901.60, 385,415.20 and 274,901.60

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Solution

The fourth proportional to 274,901.60, 385,415.20 and 274,901.60 is: 385,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,901.60 : 385,415.20 = 274,901.60 : x
  2. Step 2: Convert to fraction form
    274,901.60/385,415.20 = 274,901.60/x
  3. Step 3: Cross multiply
    274,901.60x = 385,415.20 × 274,901.60
  4. Step 4: Simplify right side
    274,901.60x = 105,951,255,144.32
  5. Step 5: Solve for x
    x = 105,951,255,144.32/274,901.60
  6. Step 6: Final answer
    x = 385,415.20

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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.