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Finding the Fourth Proportional to 379,420.29, 523,596.29 and 209,650.77

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Solution

The fourth proportional to 379,420.29, 523,596.29 and 209,650.77 is: 289,316.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,420.29 : 523,596.29 = 209,650.77 : x
  2. Step 2: Convert to fraction form
    379,420.29/523,596.29 = 209,650.77/x
  3. Step 3: Cross multiply
    379,420.29x = 523,596.29 × 209,650.77
  4. Step 4: Simplify right side
    379,420.29x = 109,772,364,319.39
  5. Step 5: Solve for x
    x = 109,772,364,319.39/379,420.29
  6. Step 6: Final answer
    x = 289,316.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.