Home / 379,380.48-523,539.84-209,612.16

Finding the Fourth Proportional to 379,380.48, 523,539.84 and 209,612.16

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Solution

The fourth proportional to 379,380.48, 523,539.84 and 209,612.16 is: 289,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,380.48 : 523,539.84 = 209,612.16 : x
  2. Step 2: Convert to fraction form
    379,380.48/523,539.84 = 209,612.16/x
  3. Step 3: Cross multiply
    379,380.48x = 523,539.84 × 209,612.16
  4. Step 4: Simplify right side
    379,380.48x = 109,740,316,708.45
  5. Step 5: Solve for x
    x = 109,740,316,708.45/379,380.48
  6. Step 6: Final answer
    x = 289,261.90

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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.