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Finding the Fourth Proportional to 194,642.40, 291,963.60 and 155,276.40

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Solution

The fourth proportional to 194,642.40, 291,963.60 and 155,276.40 is: 232,914.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,642.40 : 291,963.60 = 155,276.40 : x
  2. Step 2: Convert to fraction form
    194,642.40/291,963.60 = 155,276.40/x
  3. Step 3: Cross multiply
    194,642.40x = 291,963.60 × 155,276.40
  4. Step 4: Simplify right side
    194,642.40x = 45,335,056,739.04
  5. Step 5: Solve for x
    x = 45,335,056,739.04/194,642.40
  6. Step 6: Final answer
    x = 232,914.60

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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.