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Finding the Fourth Proportional to 194,644.40, 291,966.60 and 155,278.40

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Solution

The fourth proportional to 194,644.40, 291,966.60 and 155,278.40 is: 232,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,644.40 : 291,966.60 = 155,278.40 : x
  2. Step 2: Convert to fraction form
    194,644.40/291,966.60 = 155,278.40/x
  3. Step 3: Cross multiply
    194,644.40x = 291,966.60 × 155,278.40
  4. Step 4: Simplify right side
    194,644.40x = 45,336,106,501.44
  5. Step 5: Solve for x
    x = 45,336,106,501.44/194,644.40
  6. Step 6: Final answer
    x = 232,917.60

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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.