Home / 379,211.42-523,314.47-209,445.55

Finding the Fourth Proportional to 379,211.42, 523,314.47 and 209,445.55

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Solution

The fourth proportional to 379,211.42, 523,314.47 and 209,445.55 is: 289,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,211.42 : 523,314.47 = 209,445.55 : x
  2. Step 2: Convert to fraction form
    379,211.42/523,314.47 = 209,445.55/x
  3. Step 3: Cross multiply
    379,211.42x = 523,314.47 × 209,445.55
  4. Step 4: Simplify right side
    379,211.42x = 109,605,886,207.44
  5. Step 5: Solve for x
    x = 109,605,886,207.44/379,211.42
  6. Step 6: Final answer
    x = 289,036.35

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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.