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Finding the Fourth Proportional to 382,016.40, 572,878.80 and 115,688.40

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Solution

The fourth proportional to 382,016.40, 572,878.80 and 115,688.40 is: 173,488.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,016.40 : 572,878.80 = 115,688.40 : x
  2. Step 2: Convert to fraction form
    382,016.40/572,878.80 = 115,688.40/x
  3. Step 3: Cross multiply
    382,016.40x = 572,878.80 × 115,688.40
  4. Step 4: Simplify right side
    382,016.40x = 66,275,431,765.92
  5. Step 5: Solve for x
    x = 66,275,431,765.92/382,016.40
  6. Step 6: Final answer
    x = 173,488.45

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1.5x scale

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.