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Finding the Fourth Proportional to 212,423.79, 316,592.32 and 203,559.15

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Solution

The fourth proportional to 212,423.79, 316,592.32 and 203,559.15 is: 303,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,423.79 : 316,592.32 = 203,559.15 : x
  2. Step 2: Convert to fraction form
    212,423.79/316,592.32 = 203,559.15/x
  3. Step 3: Cross multiply
    212,423.79x = 316,592.32 × 203,559.15
  4. Step 4: Simplify right side
    212,423.79x = 64,445,263,046.83
  5. Step 5: Solve for x
    x = 64,445,263,046.83/212,423.79
  6. Step 6: Final answer
    x = 303,380.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.