Home / 420,336.96-630,791.04-171,064.32

Finding the Fourth Proportional to 420,336.96, 630,791.04 and 171,064.32

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Solution

The fourth proportional to 420,336.96, 630,791.04 and 171,064.32 is: 256,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,336.96 : 630,791.04 = 171,064.32 : x
  2. Step 2: Convert to fraction form
    420,336.96/630,791.04 = 171,064.32/x
  3. Step 3: Cross multiply
    420,336.96x = 630,791.04 × 171,064.32
  4. Step 4: Simplify right side
    420,336.96x = 107,905,840,319.69
  5. Step 5: Solve for x
    x = 107,905,840,319.69/420,336.96
  6. Step 6: Final answer
    x = 256,712.71

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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.