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Finding the Fourth Proportional to 342,789.03, 514,516.05 and 165,420.90

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Solution

The fourth proportional to 342,789.03, 514,516.05 and 165,420.90 is: 248,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,789.03 : 514,516.05 = 165,420.90 : x
  2. Step 2: Convert to fraction form
    342,789.03/514,516.05 = 165,420.90/x
  3. Step 3: Cross multiply
    342,789.03x = 514,516.05 × 165,420.90
  4. Step 4: Simplify right side
    342,789.03x = 85,111,708,055.45
  5. Step 5: Solve for x
    x = 85,111,708,055.45/342,789.03
  6. Step 6: Final answer
    x = 248,291.81

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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.