Home / 212,666.40-318,999.60-107,471.70

Finding the Fourth Proportional to 212,666.40, 318,999.60 and 107,471.70

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Solution

The fourth proportional to 212,666.40, 318,999.60 and 107,471.70 is: 161,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,666.40 : 318,999.60 = 107,471.70 : x
  2. Step 2: Convert to fraction form
    212,666.40/318,999.60 = 107,471.70/x
  3. Step 3: Cross multiply
    212,666.40x = 318,999.60 × 107,471.70
  4. Step 4: Simplify right side
    212,666.40x = 34,283,429,311.32
  5. Step 5: Solve for x
    x = 34,283,429,311.32/212,666.40
  6. Step 6: Final answer
    x = 161,207.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.