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Finding the Fourth Proportional to 342,707.40, 514,004.40 and 115,000.20

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Solution

The fourth proportional to 342,707.40, 514,004.40 and 115,000.20 is: 172,481.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,707.40 : 514,004.40 = 115,000.20 : x
  2. Step 2: Convert to fraction form
    342,707.40/514,004.40 = 115,000.20/x
  3. Step 3: Cross multiply
    342,707.40x = 514,004.40 × 115,000.20
  4. Step 4: Simplify right side
    342,707.40x = 59,110,608,800.88
  5. Step 5: Solve for x
    x = 59,110,608,800.88/342,707.40
  6. Step 6: Final answer
    x = 172,481.27

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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.