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Finding the Fourth Proportional to 300,387.88, 414,638.76 and 173,114.20

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Solution

The fourth proportional to 300,387.88, 414,638.76 and 173,114.20 is: 238,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,387.88 : 414,638.76 = 173,114.20 : x
  2. Step 2: Convert to fraction form
    300,387.88/414,638.76 = 173,114.20/x
  3. Step 3: Cross multiply
    300,387.88x = 414,638.76 × 173,114.20
  4. Step 4: Simplify right side
    300,387.88x = 71,779,857,226.39
  5. Step 5: Solve for x
    x = 71,779,857,226.39/300,387.88
  6. Step 6: Final answer
    x = 238,957.23

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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.