Home / 379,445.53-523,635.02-209,679.66

Finding the Fourth Proportional to 379,445.53, 523,635.02 and 209,679.66

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Solution

The fourth proportional to 379,445.53, 523,635.02 and 209,679.66 is: 289,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,445.53 : 523,635.02 = 209,679.66 : x
  2. Step 2: Convert to fraction form
    379,445.53/523,635.02 = 209,679.66/x
  3. Step 3: Cross multiply
    379,445.53x = 523,635.02 × 209,679.66
  4. Step 4: Simplify right side
    379,445.53x = 109,795,612,957.69
  5. Step 5: Solve for x
    x = 109,795,612,957.69/379,445.53
  6. Step 6: Final answer
    x = 289,358.04

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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.