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Finding the Fourth Proportional to 330,505.96, 495,670.38 and 143,473

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Solution

The fourth proportional to 330,505.96, 495,670.38 and 143,473 is: 215,171.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,505.96 : 495,670.38 = 143,473 : x
  2. Step 2: Convert to fraction form
    330,505.96/495,670.38 = 143,473/x
  3. Step 3: Cross multiply
    330,505.96x = 495,670.38 × 143,473
  4. Step 4: Simplify right side
    330,505.96x = 71,115,316,429.74
  5. Step 5: Solve for x
    x = 71,115,316,429.74/330,505.96
  6. Step 6: Final answer
    x = 215,171.06

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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.