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Finding the Fourth Proportional to 300,987.06, 415,370.04 and 170,154.30

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Solution

The fourth proportional to 300,987.06, 415,370.04 and 170,154.30 is: 234,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,987.06 : 415,370.04 = 170,154.30 : x
  2. Step 2: Convert to fraction form
    300,987.06/415,370.04 = 170,154.30/x
  3. Step 3: Cross multiply
    300,987.06x = 415,370.04 × 170,154.30
  4. Step 4: Simplify right side
    300,987.06x = 70,676,998,397.17
  5. Step 5: Solve for x
    x = 70,676,998,397.17/300,987.06
  6. Step 6: Final answer
    x = 234,817.40

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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.