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Finding the Fourth Proportional to 291,728.20, 436,901.10 and 291,728.20

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Solution

The fourth proportional to 291,728.20, 436,901.10 and 291,728.20 is: 436,901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,728.20 : 436,901.10 = 291,728.20 : x
  2. Step 2: Convert to fraction form
    291,728.20/436,901.10 = 291,728.20/x
  3. Step 3: Cross multiply
    291,728.20x = 436,901.10 × 291,728.20
  4. Step 4: Simplify right side
    291,728.20x = 127,456,371,481.02
  5. Step 5: Solve for x
    x = 127,456,371,481.02/291,728.20
  6. Step 6: Final answer
    x = 436,901.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.