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Finding the Fourth Proportional to 194,490.90, 291,736.35 and 155,124.90

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Solution

The fourth proportional to 194,490.90, 291,736.35 and 155,124.90 is: 232,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,490.90 : 291,736.35 = 155,124.90 : x
  2. Step 2: Convert to fraction form
    194,490.90/291,736.35 = 155,124.90/x
  3. Step 3: Cross multiply
    194,490.90x = 291,736.35 × 155,124.90
  4. Step 4: Simplify right side
    194,490.90x = 45,255,572,120.12
  5. Step 5: Solve for x
    x = 45,255,572,120.12/194,490.90
  6. Step 6: Final answer
    x = 232,687.35

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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.