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Finding the Fourth Proportional to 343,467.40, 515,201.10 and 260,523.40

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Solution

The fourth proportional to 343,467.40, 515,201.10 and 260,523.40 is: 390,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,467.40 : 515,201.10 = 260,523.40 : x
  2. Step 2: Convert to fraction form
    343,467.40/515,201.10 = 260,523.40/x
  3. Step 3: Cross multiply
    343,467.40x = 515,201.10 × 260,523.40
  4. Step 4: Simplify right side
    343,467.40x = 134,221,942,255.74
  5. Step 5: Solve for x
    x = 134,221,942,255.74/343,467.40
  6. Step 6: Final answer
    x = 390,785.10

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Similar ratio
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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.