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Finding the Fourth Proportional to 199,421.90, 299,132.85 and 133,066.70

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Solution

The fourth proportional to 199,421.90, 299,132.85 and 133,066.70 is: 199,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,421.90 : 299,132.85 = 133,066.70 : x
  2. Step 2: Convert to fraction form
    199,421.90/299,132.85 = 133,066.70/x
  3. Step 3: Cross multiply
    199,421.90x = 299,132.85 × 133,066.70
  4. Step 4: Simplify right side
    199,421.90x = 39,804,621,211.10
  5. Step 5: Solve for x
    x = 39,804,621,211.10/199,421.90
  6. Step 6: Final answer
    x = 199,600.05

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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.