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Finding the Fourth Proportional to 420,193.98, 579,844.17 and 238,880.34

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Solution

The fourth proportional to 420,193.98, 579,844.17 and 238,880.34 is: 329,641.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,193.98 : 579,844.17 = 238,880.34 : x
  2. Step 2: Convert to fraction form
    420,193.98/579,844.17 = 238,880.34/x
  3. Step 3: Cross multiply
    420,193.98x = 579,844.17 × 238,880.34
  4. Step 4: Simplify right side
    420,193.98x = 138,513,372,476.62
  5. Step 5: Solve for x
    x = 138,513,372,476.62/420,193.98
  6. Step 6: Final answer
    x = 329,641.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.