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Finding the Fourth Proportional to 320,312.08, 480,645.47 and 191,912.84

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Solution

The fourth proportional to 320,312.08, 480,645.47 and 191,912.84 is: 287,975.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,312.08 : 480,645.47 = 191,912.84 : x
  2. Step 2: Convert to fraction form
    320,312.08/480,645.47 = 191,912.84/x
  3. Step 3: Cross multiply
    320,312.08x = 480,645.47 × 191,912.84
  4. Step 4: Simplify right side
    320,312.08x = 92,242,034,763.42
  5. Step 5: Solve for x
    x = 92,242,034,763.42/320,312.08
  6. Step 6: Final answer
    x = 287,975.51

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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.