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Finding the Fourth Proportional to 291,972.80, 437,959.20 and 165,564.20

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Solution

The fourth proportional to 291,972.80, 437,959.20 and 165,564.20 is: 248,346.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,972.80 : 437,959.20 = 165,564.20 : x
  2. Step 2: Convert to fraction form
    291,972.80/437,959.20 = 165,564.20/x
  3. Step 3: Cross multiply
    291,972.80x = 437,959.20 × 165,564.20
  4. Step 4: Simplify right side
    291,972.80x = 72,510,364,580.64
  5. Step 5: Solve for x
    x = 72,510,364,580.64/291,972.80
  6. Step 6: Final answer
    x = 248,346.30

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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.